RelayRequest: correct and consistent-ify logger access
RelayRequest: correct and consistent-ify logger access

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