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

coreutils/readlink.c

@@ -21,7 +21,7 @@ int readlink_main(int argc, char **argv)
 		unsigned opt;
 		/* We need exactly one non-option argument.  */
 		opt_complementary = "=1";
-		opt = getopt32(argc, argv, "f");
+		opt = getopt32(argv, "f");
 		fname = argv[optind];
 	)
 	SKIP_FEATURE_READLINK_FOLLOW(