sysutils/44bsd-more: Fix build with LLVM16

main.c:440:22: error: incompatible function pointer types passing 'int (void *, char *, size_t)' (aka 'int (void *, char *, unsigned long)') to parameter of type 'int (* _Nullable)(void *, char *, int)' [-Wincompatible-function-pointer-types]
                fd = fropen(DEFRC, str_read);
                                   ^~~~~~~~

MFH:	2023Q3

sysutils/44bsd-more/files/patch-main.c

@@ -1,5 +1,5 @@
---- main.c.orig	2011-09-08 01:02:56.000000000 +0800
-+++ main.c	2011-09-08 01:17:47.000000000 +0800
+--- main.c.orig	2023-06-25 13:45:14.613216000 -0700
++++ main.c	2023-06-25 13:49:15.978996000 -0700
 @@ -33,9 +33,9 @@
   */
 
@@ -12,26 +12,26 @@
  	Regents of the University of California.  All rights reserved.\n";
  #endif /* not lint */
 
-@@ -68,6 +68,10 @@ static const char rcsid[] =
+@@ -68,6 +68,10 @@
  #include "less.h"
  #include "pathnames.h"
 
-+static int str_read(void *, char *, size_t);
++static int str_read(void *, char *, int);
 +void rcfiles();
 +void readrc(FILE *);
 +
  int	ispipe;
  char	*current_file, *previous_file, *current_name, *next_name;
  int	any_display;
-@@ -214,6 +218,7 @@ edit(filename, force_open)
+@@ -214,6 +218,7 @@
  /*
   * Edit the next file in the command line list.
   */
 +void
  next_file(n)
  	int n;
  {
-@@ -281,7 +286,7 @@ main(argc, argv)
+@@ -281,7 +286,7 @@
  	 * Process command line arguments and MORE environment arguments.
  	 * Command line arguments override environment arguments.
  	 */
@@ -40,7 +40,7 @@
  		envargc = 2;
  		envargv[0] = "more";
  		envargv[2] = NULL;
-@@ -403,14 +408,14 @@ quit()
+@@ -403,14 +408,14 @@
   * Read in from each of the three rc files - default, system, user.
   * Calls handle_error() directly to report errors.
   */
@@ -57,15 +57,15 @@
 
  	/* The default builtin rc file */
  	if ((c = getenv("HOME")) &&
-@@ -480,6 +485,7 @@ use_builtin_defrc:
+@@ -480,6 +485,7 @@
   * This really belongs in ncommand.c, but that file is already 33292 bytes
   * long.
   */
 +void
  readrc(fd)
  	FILE *fd;
  {
-@@ -489,7 +495,7 @@ readrc(fd)
+@@ -489,7 +495,7 @@
 
  	buf = NULL;
  	strlenbuf = 0;
@@ -74,3 +74,12 @@
  		if (!len)
  			continue;  /* ??? */
  		if (*bufptr == '#')
+@@ -527,7 +533,7 @@
+ str_read(cookie, buf, len)
+ 	void *cookie;
+ 	char *buf;
+-	size_t len;
++	int len;
+ {
+ 	static char *curpos;
+ 	static int cooklen;