Fixed missing global

Author: renky

server/mods-available/rescue_core_module.inc.php

@@ -438,7 +438,7 @@ private function _rescueMySql(){
 	 * @param type $daemon the name of the daemon
 	 */
 	private function _rescueDaemon($daemon){
-		global $conf;
+		global $app, $conf;
 
 		$app->uses('system');
 		// if you need to find all restarts search for "['init_scripts']"