From 01619531006cde1a91996d1c3736935957bcf405 Mon Sep 17 00:00:00 2001
From: westi <westi@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Sat, 27 Sep 2008 09:53:43 +0000
Subject: [PATCH] Fix Notice. When nothing exists for an action or filter.

git-svn-id: http://svn.automattic.com/wordpress/trunk@9000 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/plugin.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wp-includes/plugin.php b/wp-includes/plugin.php
index 0522d5433..dc7dfe681 100644
--- a/wp-includes/plugin.php
+++ b/wp-includes/plugin.php
@@ -658,7 +658,7 @@ function _wp_filter_build_unique_id($tag, $function, $priority) {
 		if ( !isset($function[0]->wp_filter_id) ) {
 			if ( false === $priority )
 				return false;
-			$count = count((array)$wp_filter[$tag][$priority]);
+			$count = isset($wp_filter[$tag]) ? count((array)$wp_filter[$tag][$priority]) : 0;
 			$function[0]->wp_filter_id = $count;
 			$obj_idx .= $count;
 			unset($count);