fix issue #69
fix issue #69

santuoshi/emqttd,codertrack/emqttd,fsxchen/emqttd,tempbottle/emqttd,guidao/emqttd,wwezhuimeng/emqtt,jfjalburquerque/emqttd,sunilkumartc/ermqtt,wwezhuimeng/emqtt,sunilkumartc/ermqtt,fengshao0907/emqttd,shaominghaoo/emqttd,yocome/emqttd,kimiscircle/emqttd,joaohf/emqttd,janshahid/jmq,lianghaivv/emqttd,kimiscircle/emqttd,ycaihua/emqttd,yangchaogit/emqttd,neviim/emqttd,kimiscircle/emqttd,yanyanqin/emqttd,mickelfeng/emqttd,AcmHacker/emqttd,sunilkumartc/ermqtt,gxbllm/emqttd,wwezhuimeng/emqtt,sureddy/emqttd,Inner-room/emqttd