Followup r95957, add =null to Skin::outputPage too

diff --git a/includes/Skin.php b/includes/Skin.php
index 8e2a6c8..5eb27cc 100644 (file)
--- a/includes/Skin.php
+++ b/includes/Skin.php
@@ -282,7 +282,7 @@ abstract class Skin extends ContextSource {
         * Outputs the HTML generated by other functions.
         * @param $out OutputPage
         */
-       abstract function outputPage( OutputPage $out );
+       abstract function outputPage( OutputPage $out=null );
 
        static function makeVariablesScript( $data ) {
                if ( $data ) {