pczapla/Browser-To-Mobile — comment on commit b193ff3e1bec6952929428c674289b0b74c5c00d
File: iphone/BrowserToiPhone/Classes/BrowserToiPhoneAppDelegate.m line 100
By pczapla:

Remember to always set error to nil like this:
NSError *error = nil;

It is possible that the +sharedTracker returns nil then the whole call return NO and the error code is executed using the error variable
that was not touched and contains garbage. This will make your app crash.
In other words the moment when we decide to disable tracking by making [GANTracker sharedTracker] returns nil our app will start to crash.