Apply segfault on no-args fix from robotti@metconnect.com

miscutils/mt.c

@@ -55,7 +55,7 @@ extern int mt_main(int argc, char **argv)
 	struct mtop op;
 	int fd;
 	
-	if ((argc != 2 && argc != 3) && **(argv + 1) != '-') {
+	if (argc < 2) {
 		usage(mt_usage);
 	}
 

mt.c

@@ -55,7 +55,7 @@ extern int mt_main(int argc, char **argv)
 	struct mtop op;
 	int fd;
 	
-	if ((argc != 2 && argc != 3) && **(argv + 1) != '-') {
+	if (argc < 2) {
 		usage(mt_usage);
 	}