AFNetworking/AFNetworking — pull request #225 by samsoffes (2012-02-29 22:36:52+00:00)
Title: Avoid crash with `nil` URL in request

I'm not sure what is causing this. I think it's related to the `UIImageView` category. Anyway, this fixed intermit crashing for when scrolling quickly through a table view using lots of image views with the category.