Send XVO headers only if $wgUseXVO is true.

diff --git a/includes/OutputHandler.php b/includes/OutputHandler.php
index a55adc5..91819cc 100644 (file)
--- 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;
 }