mail/panda-cclient: fix build with clang 16

Clang 16 has a new error about incompatible function types, which shows
up when building mail/panda-cclient:

  news.c:370:36: error: incompatible function pointer types passing 'int (struct dirent *)' to parameter of type 'int (*)(const struct dirent *)' [-Wincompatible-function-pointer-types]
    if ((nmsgs = scandir (tmp,&names,news_select,news_numsort)) >= 0) {
                                     ^~~~~~~~~~~
  /usr/include/dirent.h:127:12: note: passing argument to parameter here
              int (*)(const struct dirent *), int (*)(const struct dirent **,
                    ^
  news.c:370:48: error: incompatible function pointer types passing 'int (const void *, const void *)' to parameter of type 'int (*)(const struct dirent **, const struct dirent **)' [-Wincompatible-function-pointer-types]
    if ((nmsgs = scandir (tmp,&names,news_select,news_numsort)) >= 0) {
                                                 ^~~~~~~~~~~~
  /usr/include/dirent.h:127:44: note: passing argument to parameter here
              int (*)(const struct dirent *), int (*)(const struct dirent **,
                                                    ^

This is because the prototypes for the scandir(3) 'select' and 'compar'
callback function parameters do not match the declarations in
<dirent.h>. The same occurs in a few other files under src/osdep/unix.

Fix these by using the correct parameter types for the callback functions.

PR:		271539
Approved by:	thierry (maintainer)
MFH:		2023Q2

mail/panda-cclient/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	cclient
 PORTVERSION=	20130621
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	mail devel
 PKGNAMEPREFIX=	panda-
 

mail/panda-cclient/files/patch-src_osdep_unix_mh.c

@@ -0,0 +1,35 @@
+--- src/osdep/unix/mh.c.orig	2022-04-17 00:12:02 UTC
++++ src/osdep/unix/mh.c
+@@ -100,8 +100,8 @@ long mh_append (MAILSTREAM *stream,char *mailbox,appen
+ 	      long options);
+ long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+
+-int mh_select (struct direct *name);
+-int mh_numsort (const void *d1,const void *d2);
++int mh_select (const struct direct *name);
++int mh_numsort (const struct direct **d1,const struct direct **d2);
+ char *mh_file (char *dst,char *name);
+ long mh_canonicalize (char *pattern,char *ref,char *pat);
+ void mh_setdate (char *file,MESSAGECACHE *elt);
+@@ -1191,7 +1191,7 @@ long mh_append (MAILSTREAM *stream,char *mailbox,appen
+  * Returns: T to use file name, NIL to skip it
+  */
+
+-int mh_select (struct direct *name)
++int mh_select (const struct direct *name)
+ {
+   char c;
+   char *s = name->d_name;
+@@ -1206,10 +1206,9 @@ int mh_select (struct direct *name)
+  * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+  */
+
+-int mh_numsort (const void *d1,const void *d2)
++int mh_numsort (const struct direct **d1,const struct direct **d2)
+ {
+-  return atoi ((*(struct direct **) d1)->d_name) -
+-    atoi ((*(struct direct **) d2)->d_name);
++  return atoi ((*d1)->d_name) - atoi ((*d2)->d_name);
+ }
+
+

mail/panda-cclient/files/patch-src_osdep_unix_mix.c

@@ -0,0 +1,54 @@
+--- src/osdep/unix/mix.c.orig	2022-04-17 00:12:02 UTC
++++ src/osdep/unix/mix.c
+@@ -123,7 +123,7 @@ long mix_rename (MAILSTREAM *stream,char *old,char *ne
+ long mix_create (MAILSTREAM *stream,char *mailbox);
+ long mix_delete (MAILSTREAM *stream,char *mailbox);
+ long mix_rename (MAILSTREAM *stream,char *old,char *newname);
+-int mix_rselect (struct direct *name);
++int mix_rselect (const struct direct *name);
+ MAILSTREAM *mix_open (MAILSTREAM *stream);
+ void mix_close (MAILSTREAM *stream,long options);
+ void mix_abort (MAILSTREAM *stream);
+@@ -138,8 +138,8 @@ long mix_expunge (MAILSTREAM *stream,char *sequence,lo
+ long mix_ping (MAILSTREAM *stream);
+ void mix_check (MAILSTREAM *stream);
+ long mix_expunge (MAILSTREAM *stream,char *sequence,long options);
+-int mix_select (struct direct *name);
+-int mix_msgfsort (const void *d1,const void *d2);
++int mix_select (const struct direct *name);
++int mix_msgfsort (const struct direct **d1,const struct direct **d2);
+ long mix_addset (SEARCHSET **set,unsigned long start,unsigned long size);
+ long mix_burp (MAILSTREAM *stream,MIXBURP *burp,unsigned long *reclaimed);
+ long mix_burp_check (SEARCHSET *set,size_t size,char *file);
+@@ -585,7 +585,7 @@ long mix_rename (MAILSTREAM *stream,char *old,char *ne
+  * Returns: T if mix file name, NIL otherwise
+  */
+
+-int mix_rselect (struct direct *name)
++int mix_rselect (const struct direct *name)
+ {
+   return mix_dirfmttest (name->d_name);
+ }
+@@ -1150,7 +1150,7 @@ long mix_expunge (MAILSTREAM *stream,char *sequence,lo
+  * ".mix" with no suffix was used by experimental versions
+  */
+
+-int mix_select (struct direct *name)
++int mix_select (const struct direct *name)
+ {
+   char c,*s;
+ 				/* make sure name has prefix */
+@@ -1169,10 +1169,10 @@ int mix_select (struct direct *name)
+  * Returns: -1 if d1 < d2, 0 if d1 == d2, 1 d1 > d2
+  */
+
+-int mix_msgfsort (const void *d1,const void *d2)
++int mix_msgfsort (const struct direct **d1,const struct direct **d2)
+ {
+-  char *n1 = (*(struct direct **) d1)->d_name + sizeof (MIXNAME) - 1;
+-  char *n2 = (*(struct direct **) d2)->d_name + sizeof (MIXNAME) - 1;
++  char *n1 = (*d1)->d_name + sizeof (MIXNAME) - 1;
++  char *n2 = (*d2)->d_name + sizeof (MIXNAME) - 1;
+   return compare_ulong (*n1 ? strtoul (n1,NIL,16) : 0,
+ 			*n2 ? strtoul (n2,NIL,16) : 0);
+ }

mail/panda-cclient/files/patch-src_osdep_unix_mx.c

@@ -0,0 +1,35 @@
+--- src/osdep/unix/mx.c.orig	2022-04-17 00:12:02 UTC
++++ src/osdep/unix/mx.c
+@@ -98,8 +98,8 @@ long mx_append_msg (MAILSTREAM *stream,char *flags,MES
+ long mx_append_msg (MAILSTREAM *stream,char *flags,MESSAGECACHE *elt,
+ 		    STRING *st,SEARCHSET *set);
+
+-int mx_select (struct direct *name);
+-int mx_numsort (const void *d1,const void *d2);
++int mx_select (const struct direct *name);
++int mx_numsort (const struct direct **d1,const struct direct **d2);
+ char *mx_file (char *dst,char *name);
+ long mx_lockindex (MAILSTREAM *stream);
+ void mx_unlockindex (MAILSTREAM *stream);
+@@ -1110,7 +1110,7 @@ long mx_append_msg (MAILSTREAM *stream,char *flags,MES
+  * Returns: T to use file name, NIL to skip it
+  */
+
+-int mx_select (struct direct *name)
++int mx_select (const struct direct *name)
+ {
+   char c;
+   char *s = name->d_name;
+@@ -1125,10 +1125,9 @@ int mx_select (struct direct *name)
+  * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+  */
+
+-int mx_numsort (const void *d1,const void *d2)
++int mx_numsort (const struct direct **d1,const struct direct **d2)
+ {
+-  return atoi ((*(struct direct **) d1)->d_name) -
+-    atoi ((*(struct direct **) d2)->d_name);
++  return atoi ((*d1)->d_name) - atoi ((*d2)->d_name);
+ }
+
+

mail/panda-cclient/files/patch-src_osdep_unix_news.c

@@ -0,0 +1,35 @@
+--- src/osdep/unix/news.c.orig	2022-04-17 00:12:02 UTC
++++ src/osdep/unix/news.c
+@@ -76,8 +76,8 @@ MAILSTREAM *news_open (MAILSTREAM *stream);
+ long news_delete (MAILSTREAM *stream,char *mailbox);
+ long news_rename (MAILSTREAM *stream,char *old,char *newname);
+ MAILSTREAM *news_open (MAILSTREAM *stream);
+-int news_select (struct direct *name);
+-int news_numsort (const void *d1,const void *d2);
++int news_select (const struct direct *name);
++int news_numsort (const struct direct **d1,const struct direct **d2);
+ void news_close (MAILSTREAM *stream,long options);
+ void news_fast (MAILSTREAM *stream,char *sequence,long flags);
+ void news_flags (MAILSTREAM *stream,char *sequence,long flags);
+@@ -402,7 +402,7 @@ MAILSTREAM *news_open (MAILSTREAM *stream)
+  * Returns: T to use file name, NIL to skip it
+  */
+
+-int news_select (struct direct *name)
++int news_select (const struct direct *name)
+ {
+   char c;
+   char *s = name->d_name;
+@@ -417,10 +417,9 @@ int news_select (struct direct *name)
+  * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+  */
+
+-int news_numsort (const void *d1,const void *d2)
++int news_numsort (const struct direct **d1,const struct direct **d2)
+ {
+-  return atoi ((*(struct direct **) d1)->d_name) -
+-    atoi ((*(struct direct **) d2)->d_name);
++  return atoi ((*d1)->d_name) - atoi ((*d2)->d_name);
+ }
+
+