From 4c94b8a9ec6039734ab09e123d7efd34cd0a0fc7 Mon Sep 17 00:00:00 2001
From: Tim Starling <tstarling@users.mediawiki.org>
Date: Fri, 23 Jul 2010 05:00:58 +0000
Subject: [PATCH] Send XVO headers only if $wgUseXVO is true.

---
 includes/OutputHandler.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/includes/OutputHandler.php b/includes/OutputHandler.php
index a55adc5370..91819cc76a 100644
--- a/includes/OutputHandler.php
+++ b/includes/OutputHandler.php
@@ -90,7 +90,10 @@ function wfGzipHandler( $s ) {
 	}
 	if ( !$foundVary ) {
 		header( 'Vary: Accept-Encoding' );
-		header( 'X-Vary-Options: Accept-Encoding;list-contains=gzip' );
+		global $wgUseXVO;
+		if ( $wgUseXVO ) {
+			header( 'X-Vary-Options: Accept-Encoding;list-contains=gzip' );
+		}
 	}
 	return $s;
 }
-- 
2.20.1