Fix checkExchanges logic to call onCloseStateChange on all state changes
Fix checkExchanges logic to call onCloseStateChange on all state changes

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