From c71c407fd29f8acd595f7a2fca1787e55c5ee8d3 Mon Sep 17 00:00:00 2001
From: westi <westi@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Thu, 11 Mar 2010 21:58:17 +0000
Subject: [PATCH] Fix a possible undefined offset warning in do_action. Fixes
 #11241 props chrisbliss18.

git-svn-id: http://svn.automattic.com/wordpress/trunk@13674 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 3a9c507a6..bb41bd0ad 100644
--- a/wp-includes/plugin.php
+++ b/wp-includes/plugin.php
@@ -321,7 +321,7 @@ function do_action($tag, $arg = '') {
 	}
 
 	$args = array();
-	if ( is_array($arg) && 1 == count($arg) && is_object($arg[0]) ) // array(&$this)
+	if ( is_array($arg) && 1 == count($arg) && isset($arg[0]) && is_object($arg[0]) ) // array(&$this)
 		$args[] =& $arg[0];
 	else
 		$args[] = $arg;