From 683dcdc83aad5154affd443ae73270efa874764d Mon Sep 17 00:00:00 2001
From: Alexandre Emsenhuber <ialex@users.mediawiki.org>
Date: Sun, 12 Dec 2010 20:45:32 +0000
Subject: [PATCH] Fix fatal error from r78264

---
 includes/diff/DifferenceEngine.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/diff/DifferenceEngine.php b/includes/diff/DifferenceEngine.php
index ff2d247478..83318ddcb6 100644
--- a/includes/diff/DifferenceEngine.php
+++ b/includes/diff/DifferenceEngine.php
@@ -1006,7 +1006,7 @@ CONTROL;
 				'undo' => $this->mNewid
 			) );
 			$htmlLink = htmlspecialchars( wfMsg( 'editundo' ) );
-			$htmlTitle = Xml::expandAttributes( array( 'title' => $skin->titleAttrib( 'undo' ) ) );
+			$htmlTitle = Xml::expandAttributes( array( 'title' => $wgUser->getSkin()->titleAttrib( 'undo' ) ) );
 			if ( $editable && !$this->mOldRev->isDeleted( Revision::DELETED_TEXT ) && !$this->mNewRev->isDeleted( Revision::DELETED_TEXT ) ) {
 				$this->mNewtitle .= " (<a href='$newUndo' $htmlTitle>" . $htmlLink . "</a>)";
 			}
-- 
2.20.1