Multiple calls to _vud_comment_get_node_type, use static cache

I have noticed, that every time comment is being loaded _vud_comment_get_node_type is being called to get node type performing SQL query. If you have 50 comments per page, that's 50 queries, if 300?
I suggest usging static cache as follows in vud_comment.module

/**
 * Function to return the node type of a particular node ID.
 */
function _vud_comment_get_node_type($nid) {
	static $cache = array();
  if (!isset($cache[$nid])) {
  	$type = db_result(db_query("SELECT type from {node} where nid = %d", $nid));		
    $cache[$nid] = $type;
		return $type;
	}
	else {
		return $cache[$nid];
	}
}

6.x-2.x has the same problem.