Clear xml errors

lib/private/app/infoparser.php

@@ -59,6 +59,7 @@ class InfoParser {
 		$xml = simplexml_load_file($file);
 		libxml_disable_entity_loader($loadEntities);
 		if ($xml == false) {
+			libxml_clear_errors();
 			return null;
 		}
 		$array = $this->xmlToArray($xml);