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/udhcp/dumpleases.c

@@ -33,7 +33,7 @@ int dumpleases_main(int argc, char **argv)
 	applet_long_options = dumpleases_longopts;
 #endif
 	opt_complementary = "=0:a--r:r--a";
-	opt = getopt32(argc, argv, "arf:", &file);
+	opt = getopt32(argv, "arf:", &file);
 
 	fd = xopen(file, O_RDONLY);