mqtt:fix iotx_mc_handle_recv_PUBLISH
@@ -1343,7 +1343,7 @@ static int iotx_mc_handle_recv_PUBLISH(iotx_mc_client_t *c)
memset(&topicName, 0x0, sizeof(MQTTString));
if (1 != MQTTDeserialize_publish((unsigned char *)&topic_msg.dup,
- (int *)qos,
+ (int *)&qos,
(unsigned char *)&topic_msg.retain,
(unsigned short *)&topic_msg.packet_id,
&topicName,
