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

networking/route.c

@@ -656,7 +656,7 @@ int route_main(int argc, char **argv)
 		}
 	}
 
-	opt = getopt32(argc, argv, "A:ne", &family);
+	opt = getopt32(argv, "A:ne", &family);
 
 	if ((opt & ROUTE_OPT_A) && strcmp(family, "inet") != 0) {
 #if ENABLE_FEATURE_IPV6