Possible false response code

[sanketplus]

if we look at https://github.com/thoas/stats/blob/master/recorder.go#L39 and take following scenario:

func (r *recorderResponseWriter) WriteHeader(code int) {
	r.written = true
	r.ResponseWriter.WriteHeader(code)
	r.status = code
}

1. We write header 200. :: r.status=200, r.ResponseWriter.status=200
2. We write header 200. :: r.status=300, r.ResponseWriter.status=200
   in step 2 internal response writer ignores new status code.

ref:

• go http doc
• source code

if I understood the issue correctly and if it really is a genuine issue, happy to make a PR