Setting rootViewController on iOS >= 4.0

Cocos2d-x V0.12 release does the rootViewController setting in file AppController.mm wrong

It should be done like this

if ([window respondsToSelector:selector(setRootViewController:)]) {
//iOS >=4.0
window.rootViewController = viewController;
} else {
//iOS <4.0
[window addSubview:viewController.view];
}@

What will happen with the codes in V0.12?

Cocos2d-x V0.12 on iOS runs fine - but the code mentioned above assures continuity for iOS >=4.0 since the preferred way to add a rootViewController is window.rootViewController = viewController for iOS>=4.0