AFNetworking/AFNetworking — pull request #693 by danielctull (2012-12-19 14:49:56+00:00)
Title: Cause a failure when an operation is cancelled

At present, when an operation is cancelled there is no decent way to handle that within the scope of AFNetworking. This change uses the existing error created when a `cancel` is called and uses that as the error for the operation. This causes the failure block to be executed.

Fixes issue #657.