From: Ilmari Karonen <vyznev@users.mediawiki.org>
Date: Wed, 6 Dec 2006 08:46:22 +0000 (+0000)
Subject: fix "show changes" edit button breakage from r18194
X-Git-Tag: 1.31.0-rc.0~54977
X-Git-Url: http://git.cyclocoop.org/url?a=commitdiff_plain;h=c1902105b74b9a24176c359aed5dff87aa394419;p=lhc%2Fweb%2Fwiklou.git

fix "show changes" edit button breakage from r18194
---

diff --git a/includes/DifferenceEngine.php b/includes/DifferenceEngine.php
index 4dbe8b4a21..8f093baa5d 100644
--- a/includes/DifferenceEngine.php
+++ b/includes/DifferenceEngine.php
@@ -437,6 +437,9 @@ CONTROL;
 	 * If there are revisions between the ones being compared, return a note saying so.
 	 */
 	function getMultiNotice() {
+		if ( !is_object($this->mOldRev) || !is_object($this->mNewRev) )
+			return '';
+
 		$oldid = $this->mOldRev->getId();
 		$newid = $this->mNewRev->getId();
 		if ( $oldid > $newid ) {