AFNetworking/AFNetworking — pull request #842 by 0xced (2013-03-07 12:27:49+00:00)
Title: Update network activity indicator only if requests have a non nil URL

If requests have a nil URL (try commenting the line `_avatarImageURLString = [attributes valueForKeyPath:@"avatar_image.url"];` in `User.m`) the network activity indicator will activate although there is no network activity at all.