edx/edx-platform — pull request #5666 by dmitchell (2014-10-21 17:57:38+00:00)
Title: Temporary fix for runtime.resources_fs error

@stephensanchez @adampalay fix for TNL-644

@cpennington I assume you'll figure out the correct way to fix this. I'm wondering if the caller which is trying to construct an LmsModuleSystem should check whether descriptor.runtime is already that.