Assign the result of getopt() to an int rather than to a char (which is

possibly unsigned).

sbin/ffsinfo/ffsinfo.c

@@ -123,7 +123,7 @@ main(int argc, char **argv)
 {
 	DBG_FUNC("main")
 	char	*device, *special;
-	char	ch;
+	int	ch;
 	size_t	len;
 	struct stat	st;
 	struct csum	*dbg_csp;

usr.bin/showmount/showmount.c

@@ -117,12 +117,11 @@ main(argc, argv)
 	register struct exportslist *exp;
 	register struct grouplist *grp;
 	register int rpcs = 0, mntvers = 1;
-	char ch;
 	const char *host;
-	int estat;
+	int ch, estat;
 
 	while ((ch = getopt(argc, argv, "ade3")) != -1)
-		switch((char)ch) {
+		switch (ch) {
 		case 'a':
 			if (type == 0) {
 				type = ALL;