Fix saving monitor due to MQTT being empty

web/includes/Monitor.php

@@ -245,7 +245,7 @@ public static function getStatuses() {
     'RTSPServer' => array('type'=>'boolean', 'default'=>0),
     'RTSPStreamName'  => '',
     'Importance'      =>  'Normal',
-    'MQTT_Enabled'    =>  false,
+    'MQTT_Enabled'   => array('type'=>'boolean','default'=>0),
     'MQTT_Subscriptions'  =>  '',
   );
   private $status_fields = array(

web/includes/actions/monitor.php

@@ -101,6 +101,7 @@ if ($action == 'save') {
       'Method' => 'raw',
       'GroupIds'  =>  array(),
       'LinkedMonitors'  => array(),
+      'MQTT_Enabled'  =>  0,
       'RTSPServer' => 0
       );