Ticket #21990: 21990.diff

wp-includes/SimplePie/Sanitize.php

@@ -246 +246 @@
 
                         if ($type & (SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML))
                         {
-
+                                if ( ! class_exists( 'DOMDocument' ) )
+                                {
+                                        return '';
+                                }
                                 $document = new DOMDocument();
                                 $document->encoding = 'UTF-8';
                                 $data = $this->preprocess($data, $type);