From 47500910e16bc30faaf248355c77ffaa147bf048 Mon Sep 17 00:00:00 2001
From: zhouyuyan <joy.zhou@honeywell.com>
Date: Tue, 6 Feb 2018 11:01:06 +0800
Subject: [PATCH] fix broker out painc

---
 broker/client.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/broker/client.go b/broker/client.go
index 941c2b2..4fdc5ab 100644
--- a/broker/client.go
+++ b/broker/client.go
@@ -527,7 +527,7 @@ func (c *client) Close() {
 }
 
 func (c *client) WriterPacket(packet packets.ControlPacket) error {
-	if packet == nil {
+	if c == nil || packet == nil {
 		return nil
 	}