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/dos2unix.c

@@ -92,7 +92,7 @@ int dos2unix_main(int argc, char **argv)
 
 	/* -u convert to unix, -d convert to dos */
 	opt_complementary = "u--d:d--u"; /* mutually exclusive */
-	o = getopt32(argc, argv, "du");
+	o = getopt32(argv, "du");
 
 	/* Do the conversion requested by an argument else do the default
 	 * conversion depending on our name.  */