Wrap ino_hash and dev_hash for libtar_hash_new to match function type

Fixes the following gcc 8 warnings:

append.c: In function ‘tar_append_file’:
append.c:109:35: warning: cast between incompatible function types from ‘int (*)(ino_t *)’ {aka ‘int (*)(long unsigned int *)’} to ‘unsigned int (*)(void *, unsigned int)’ [-Wcast-function-type]
   td->td_h = libtar_hash_new(256, (libtar_hashfunc_t)ino_hash);
                                   ^
handle.c: In function ‘tar_init’:
handle.c:52:33: warning: cast between incompatible function types from ‘int (*)(dev_t *)’ {aka ‘int (*)(long unsigned int *)’} to ‘unsigned int (*)(void *, unsigned int)’ [-Wcast-function-type]
   (*t)->h = libtar_hash_new(16, (libtar_hashfunc_t)dev_hash);

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

lib/append.c

@@ -53,6 +53,11 @@ tar_dev_free(tar_dev_t *tdp)
 	free(tdp);
 }
 
+static unsigned int ino_hash_wrap(void *p, unsigned int n)
+{
+	(void)n;
+	return (unsigned int)ino_hash(p);
+}
 
 /* appends a file to the tar archive */
 int
@@ -110,7 +115,7 @@ tar_append_file(TAR *t, const char *realname, const char *savename)
 		if (td == NULL)
 			return -1;
 		td->td_dev = s.st_dev;
-		td->td_h = libtar_hash_new(256, (libtar_hashfunc_t)ino_hash);
+		td->td_h = libtar_hash_new(256, ino_hash_wrap);
 		if (td->td_h == NULL) {
 			free(td);
 			return -1;

lib/handle.c

@@ -29,6 +29,11 @@ const char libtar_version[] = PACKAGE_VERSION;
 
 static tartype_t default_type = { open, close, read, write };
 
+static unsigned int dev_hash_wrap(void *p, unsigned int n)
+{
+	(void)n;
+	return (unsigned int)dev_hash(p);
+}
 
 static int
 tar_init(TAR **t, const char *pathname, tartype_t *type,
@@ -53,7 +58,7 @@ tar_init(TAR **t, const char *pathname, tartype_t *type,
 		(*t)->h = libtar_hash_new(256,
 					  (libtar_hashfunc_t)path_hashfunc);
 	else
-		(*t)->h = libtar_hash_new(16, (libtar_hashfunc_t)dev_hash);
+		(*t)->h = libtar_hash_new(16, dev_hash_wrap);
 	if ((*t)->h == NULL)
 	{
 		free(*t);