Retain Cycle in CarbonTabSwipeNavigation

[troystump]

Hi there,

It seems there is a retain cycle on line 61 of CarbonTabSwipeNavigation.m:

rootViewController = viewController;

Since rootViewController is an instance variable, which is strong by default, the child view controller is retaining the parent view controller.

An easy fix is to make the rootViewController instance variable weak on line 38:

__weak UIViewController *rootViewController;

This then allows the parent to dealloc correctly (e.g. when the root view controller is popped off the navigation stack).

Thanks a lot, and great library so far!