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

diff --git a/init/halt.c b/init/halt.c
index ca5c153..e21ad57 100644
--- a/init/halt.c
+++ b/init/halt.c
@@ -35,7 +35,7 @@
 	for (which = 0; "hpr"[which] != *applet_name; which++);
 
 	/* Parse and handle arguments */
-	flags = getopt32(argc, argv, "d:nf", &delay);
+	flags = getopt32(argv, "d:nf", &delay);
 	if (flags & 1) sleep(xatou(delay));
 	if (!(flags & 2)) sync();