Fixed return in End() to not return error value when success
Fixed return in End() to not return error value when success

roth1002/gorequest,rockneurotiko/gorequest,csrgxtu/gorequest,parnurzeal/gorequest,going/requests,QuentinPerez/gorequest,kemadz/gorequest,julianshen/gorequest,vicanso/gorequest,fromkeith/gorequest,jqs7/gorequest