Remove unnecessary null check
Remove unnecessary null check

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