TChannelConnection: trivial cleanup
TChannelConnection: trivial cleanup

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