shutdown crash fix

apps/openmw/mwrender/renderingmanager.cpp

@@ -112,6 +112,8 @@ RenderingManager::RenderingManager (OEngine::Render::OgreRenderer& _rend, const
 
 RenderingManager::~RenderingManager ()
 {
+    mRendering.removeWindowEventListener(this);
+
     delete mPlayer;
     delete mSkyManager;
     delete mDebugging;

apps/openmw/mwrender/water.cpp

@@ -114,6 +114,9 @@ Water::~Water()
 {
     MeshManager::getSingleton().remove("water");
 
+    if (mReflectionTarget)
+        mReflectionTexture->getBuffer()->getRenderTarget()->removeListener(this);
+
     mWaterNode->detachObject(mWater);
     mSceneManager->destroyEntity(mWater);
     mSceneManager->destroySceneNode(mWaterNode);

libs/openengine/ogre/renderer.cpp

@@ -156,6 +156,11 @@ void OgreRenderer::setWindowEventListener(Ogre::WindowEventListener* listener)
 	Ogre::WindowEventUtilities::addWindowEventListener(mWindow, listener);
 }
 
+void OgreRenderer::removeWindowEventListener(Ogre::WindowEventListener* listener)
+{
+	Ogre::WindowEventUtilities::removeWindowEventListener(mWindow, listener);
+}
+
 void OgreRenderer::setFov(float fov)
 {
     mCamera->setFOVy(Degree(fov));

libs/openengine/ogre/renderer.hpp

@@ -106,6 +106,7 @@ namespace OEngine
             ~OgreRenderer() { cleanup(); }
 
             void setWindowEventListener(Ogre::WindowEventListener* listener);
+            void removeWindowEventListener(Ogre::WindowEventListener* listener);
 
             /** Configure the renderer. This will load configuration files and
             set up the Root and logging classes. */