用户名优化

mallchat-custom-server/src/main/java/com/abin/mallchat/custom/chat/service/impl/ChatServiceImpl.java

@@ -179,6 +179,7 @@ public class ChatServiceImpl implements ChatService {
                     .status(transformAct(request.getActType()))
                     .build();
             messageMarkDao.updateById(update);
+            return;
         }
         //没标记过消息，插入一条新消息
         MessageMark insert = MessageMark.builder()