cmd/go-contrib-init: fix in-GOPATH check

It's okay to have GOROOT=$HOME/go, GOPATH=$HOME.

That's what I have.

It's just not okay to hack in Go under $GOPATH/src.

Change-Id: I6ae69aceb43970bbdc9631ab090689a153954087
Reviewed-on: https://go-review.googlesource.com/45651
Reviewed-by: Steve Francia <spf@golang.org>
1 file changed