fuel/core — pull request #1181 by kenjis (2012-10-31 01:43:04+00:00)
Title: Fix misjudgment of Response object if users write \Fuel\Core\Response in...

... controllers

I don't know this is a bug or not.

If you write like this in your controller

```
public function action_image($id = null, $name = null)
{
…
$body = file_get_contents($path);
return \Fuel\Core\Response::forge($body, 200, array('Content-Type' =>
'image/png'));
}
```

```if ( ! $response instanceof \Response)``` will return true, because there is no \Response class. And Status code and Content-Type will be gone, because of next line ```$response = \Response::forge($response);```

This PR fixes it.