Browser, memory leak, missing delete

In function SampleBrowser::shutdown (which overrides function SampleContext::shutdown),

It has this (at the bottom):

mWindow = 0;

SampleContext::shutdown();

For this, function SampleContext::shutdown can no longer correctly remove the handler when it calls this:

Ogre::WindowEventUtilities::removeWindowEventListener(mWindow, this); /* mWindow - it is NULL! =o */

FIX:

In function SampleBrowser::shutdown:
/* mWindow = 0; / / Don't nullify it here! >_< */

Then, in function SampleContext::shutdown:
Ogre::WindowEventUtilities::removeWindowEventListener(mWindow, this), mWindow = 0; /* Instead, nullify it here! XD */

Have a nice day! =D