TChannelConnection: add err to reset as intended
TChannelConnection: add err to reset as intended

benfleis/tchannel,vanloswang/tchannel,hustxiaoc/tchannel,bunnyblue/tchannel,chenwenbin928/tchannel,bunnyblue/tchannel,chenwenbin928/tchannel,sasa233/tchannel,benfleis/tchannel,RyanTech/tchannel,savaki/tchannel,savaki/tchannel,sasa233/tchannel,vanloswang/tchannel,Zirpon/tchannel,hustxiaoc/tchannel,Zirpon/tchannel,RyanTech/tchannel,benfleis/tchannel,savaki/tchannel,bunnyblue/tchannel,Zirpon/tchannel,hustxiaoc/tchannel,i/tchannel,i/tchannel,vanloswang/tchannel,sasa233/tchannel,chenwenbin928/tchannel,i/tchannel,RyanTech/tchannel