errors: Move init errors to ProtocolError
errors: Move init errors to ProtocolError

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