False positive with closure outside of `if` body

[silverwind]

var rc io.ReadCloser
if true {
  resp, err := http.Get("http://foo")
	rc = resp.Body
  if err != nil {
  	print(err)
  }
}
defer rc.Close()

This highlights a false-positive when resp.Body is closed outsite the if body. Removing the if wrapping makes it correctly detect it.