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

util-linux/fdformat.c

@@ -57,7 +57,7 @@ int fdformat_main(int argc,char **argv)
 	if (argc < 2) {
 		bb_show_usage();
 	}
-	verify = !getopt32(argc, argv, "n");
+	verify = !getopt32(argv, "n");
 	argv += optind;
 
 	xstat(*argv, &st);