test(http): fix Body.concat test
test(http): fix Body.concat test

Twey/hyper,hyperium/hyper,tshepang/hyper,yazaddaruvala/hyper,tshepang/hyper,Twey/hyper,Twey/hyper,hyperium/hyper,nickgonzales/hyper,hyperium/hyper,yazaddaruvala/hyper,nickgonzales/hyper,nickgonzales/hyper,tshepang/hyper