Ticket #11518: 11168.2.diff

wp-includes/default-widgets.php

@@ -732 +732 @@
                         echo $before_title . $title . $after_title;
                 wp_widget_rss_output( $rss, $instance );
                 echo $after_widget;
-                $rss->__destruct(); 
+
+                if ( ! is_wp_error($rss) )
+                        $rss->__destruct();
                 unset($rss);
         }