Commented Issue: HttpResponseException doesn't work in custom IHttpRoute implementation [387]

I have a custom IHttpRoute implementation for doing some custom routing. I want to throw a 400 (bad request) sometimes. I tried to do a "throw new HttpResponseException()" in my code but the client always receives a 500.
Comments: [Fixed](https://aspnetwebstack.codeplex.com/SourceControl/changeset/0a11d4dd907f651d3f05d3d966508c19b6517bc1).