From 4c146968c843f74bf1b578ba78b614b5bd7f5457 Mon Sep 17 00:00:00 2001
From: "Mark A. Hershberger" <mah@everybody.org>
Date: Thu, 10 Apr 2014 11:22:51 -0400
Subject: [PATCH] Fix IE9's lack of support for console.warn.apply

Bug: 63770
Change-Id: I8c286af374df5b5c1e7fa6b9ea1bef2ddaf5d796
---
 resources/src/mediawiki/mediawiki.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/resources/src/mediawiki/mediawiki.js b/resources/src/mediawiki/mediawiki.js
index f6154eeb0d..e844f95ee6 100644
--- a/resources/src/mediawiki/mediawiki.js
+++ b/resources/src/mediawiki/mediawiki.js
@@ -538,7 +538,7 @@ var mw = ( function ( $, undefined ) {
 			 */
 			log.warn = function () {
 				var console = window.console;
-				if ( console && console.warn ) {
+				if ( console && console.warn && console.warn.apply ) {
 					console.warn.apply( console, arguments );
 					if ( console.trace ) {
 						console.trace();
-- 
2.20.1