From c7c92af0c7e16fbcb217a88b31970c554076f2a7 Mon Sep 17 00:00:00 2001
From: Matt Johnston <mattj@users.mediawiki.org>
Date: Mon, 29 Sep 2008 10:14:45 +0000
Subject: [PATCH] Fix r41377 - Incompatible old keys caused Fatal Error

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

diff --git a/includes/Interwiki.php b/includes/Interwiki.php
index 4fa6b520d3..3d0f216f40 100644
--- a/includes/Interwiki.php
+++ b/includes/Interwiki.php
@@ -123,7 +123,7 @@ class Interwiki {
 		global $wgMemc;
 		$key = wfMemcKey( 'interwiki', $prefix );
 		$mc = $wgMemc->get( $key );
-		if( $mc ){
+		if( $mc && is_array( $mc ) ){ // is_array is hack for old keys
 			if( $this->loadFromArray( $mc ) ){
 				wfDebug("Succeeded\n");
 				return true;
-- 
2.20.1