Don't double close sub channels
Don't double close sub channels

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