黑名单发送消息优化3

app/enterprise/model/Message.php

@@ -234,6 +234,9 @@ class Message extends BaseModel
         $message->update(['is_last'=>0],['chat_identify'=>$chat_identify]);
         if (isset($param['msg_id'])) {
             $message = $message->where('msg_id', $param['msg_id'])->find();
+            if (!$message) {
+                $message=new self();
+            }
         }
         $message->save($data);