Don't try to output bogus Last-Modified timestamp if there are no recentchanges table...

diff --git a/includes/SpecialRecentchanges.php b/includes/SpecialRecentchanges.php
index 75a4bfc..9914924 100644 (file)
--- a/includes/SpecialRecentchanges.php
+++ b/includes/SpecialRecentchanges.php
@@ -53,7 +53,7 @@ function wfSpecialRecentchanges( $par ) {
        $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, $fname );
        # 10 seconds server-side caching max
        $wgOut->setSquidMaxage( 10 );
-       if( $wgOut->checkLastModified( $lastmod ) ){
+       if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
                # Client cache fresh and headers sent, nothing more to do.
                return;
        }