don't pass argc in getopt32, it's superfluous

(add/remove: 0/0 grow/shrink: 12/131 up/down: 91/-727) Total: -636 bytes
   text    data     bss     dec     hex filename
 773469    1058   11092  785619   bfcd3 busybox_old
 772644    1058   11092  784794   bf99a busybox_unstripped

loginutils/sulogin.c

@@ -53,7 +53,7 @@ int sulogin_main(int argc, char **argv)
 	logmode = LOGMODE_BOTH;
 	openlog(applet_name, 0, LOG_AUTH);
 
-	if (getopt32(argc, argv, "t:", &timeout_arg)) {
+	if (getopt32(argv, "t:", &timeout_arg)) {
 		timeout = xatoi_u(timeout_arg);
 	}