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

modutils/insmod.c

@@ -3980,7 +3980,7 @@ int insmod_main( int argc, char **argv)
 	struct utsname myuname;
 
 	/* Parse any options */
-	getopt32(argc, argv, OPTION_STR, &opt_o);
+	getopt32(argv, OPTION_STR, &opt_o);
 	arg1 = argv[optind];
 	if (option_mask32 & OPT_o) { // -o /* name the output module */
 		free(m_name);