TChannelConnection: trivial cleanup in #buildOutRequest
TChannelConnection: trivial cleanup in #buildOutRequest

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