setFileVersion (r91435) was missing default $val

diff --git a/includes/OutputPage.php b/includes/OutputPage.php
index 1de0b65..32e99fd 100644 (file)
--- a/includes/OutputPage.php
+++ b/includes/OutputPage.php
@@ -1307,10 +1307,11 @@ class OutputPage {
         * @return Mixed: previous value
         */
        public function setFileVersion( $file ) {
+               $val = null;
                if ( $file instanceof File && $file->exists() ) {
                        $val = array( 'time' => $file->getTimestamp(), 'sha1' => $file->getSha1() );
                }
-               return wfSetVar( $this->mFileVersion, $val );
+               return wfSetVar( $this->mFileVersion, $val, true );
        }
 
        /**