AFNetworking error does not trickle all the way back through the callbacks.

[spilliams]

(I'm using NRGramKit 1.4)
My app makes a call to log in, and AFNetworking (1.3.4) comes back with an error. The error trickles up to NRGramKit.m:219, where the error data is no longer used in the callback chain. Following the chain from there, we pass through NRGramKit.m:145 (which gets nil parameters as well) before hitting NRGramKit.m:241, where an IGUser is created using the nil dictionary.

By the time the callback chain makes it back to the original call to +loginInWebView:loginLoadingCallback:finishedCallback: we have lost track of the fact that there was an error, and instead we have an empty user object.