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/comm.c

@@ -47,7 +47,7 @@ int comm_main(int argc, char **argv)
 	unsigned flags;
 
 	opt_complementary = "=2";
-	flags = getopt32(argc, argv, "123");
+	flags = getopt32(argv, "123");
 	argv += optind;
 
 	for (i = 0; i < 2; ++i) {