aspnet/Mvc — pull request #1548 by rynowak (2014-11-12 21:22:31+00:00)
Title: Fix for MVC #1539 - Deal with the case where request services are not se...

...t

Rather than throwing here, this does what routing does. If request
services aren't set, we just create our own scope.

This will NOT create an extra scope if request services are already set.