Fix HTML sanitizer to skip <!-- node type X --> in output (#1490583)

Aleksander Machniak

2015-11-05 c7c09f85d9ccab83f720d1f938035884b9db5d6a

 program/lib/Roundcube/rcube_washtml.php

@@ -313,7 +313,7 @@
        $dump = '';

        do {
            switch($node->nodeType) {
            switch ($node->nodeType) {
            case XML_ELEMENT_NODE: //Check element
                $tagName = strtolower($node->tagName);
                if ($callback = $this->handlers[$tagName]) {
@@ -345,14 +345,9 @@
            case XML_HTML_DOCUMENT_NODE:
                $dump .= $this->dumpHtml($node, $level);
                break;

            case XML_DOCUMENT_TYPE_NODE:
                break;

            default:
                $dump .= '<!-- node type ' . $node->nodeType . ' -->';
            }
        } while($node = $node->nextSibling);
        }
        while($node = $node->nextSibling);

        return $dump;
    }