go fmt.
go fmt.

result of `gofmt -s -w . `.

muroachanf/mux,scriptoLLC/mux,jboelter/mux,studygolang/mux,w4ngyi/mux,outrightmental/go-mux,matk86/mux,buddhamagnet/mux,Manbeardo/mux,Gorilla/mux,Arkan/mux,gopherlabs/gopher-providers-mux,Vorstack/mux,heetch/mux,gorilla/mux,coolljt0725/mux,kiip/mux,TramPamPam/mux,wfxiang08/mux,laohanlinux/mux,pH14/mux,vonwenm/mux,CedarLogic/mux,beyang/mux-clone,dvln/mux