some cleanup

apps/openmw/mwrender/exterior.cpp

@@ -38,7 +38,7 @@ ExteriorCellRender::ExteriorCellRender(ESMS::CellStore<MWWorld::RefData> &_cell,
     : mCell(_cell), mEnvironment (environment), mScene(_scene), mBase(NULL), mInsert(NULL), mAmbientMode (0)
 {
     uniqueID = uniqueID +1;
-    sg = Ogre::Root::getSingleton().getSceneManagerIterator().getNext()->createStaticGeometry( "sg" + Ogre::StringConverter::toString(uniqueID));
+    sg = mScene.getMgr()->createStaticGeometry( "sg" + Ogre::StringConverter::toString(uniqueID));
 }
 
 
@@ -400,13 +400,13 @@ void ExteriorCellRender::destroy()
       mScene.getMgr()->destroySceneNode(mBase);
     }
 
-  mBase = NULL;
-  std::cout << "destroy";
-  if (sg)
-  {
-  Ogre::Root::getSingleton().getSceneManagerIterator().getNext()->destroyStaticGeometry(sg);
-  sg = 0;
-  }
+    mBase = 0;
+
+    if (sg)
+    {
+        mScene.getMgr()->destroyStaticGeometry (sg);
+        sg = 0;
+    }
 }
 
 // Switch through lighting modes.

apps/openmw/mwworld/world.cpp

@@ -284,7 +284,6 @@ namespace MWWorld
 
         removeScripts (iter->first);
         mEnvironment.mMechanicsManager->dropActors (iter->first);
-        iter->second->destroy();
         mEnvironment.mSoundManager->stopSound (iter->first);
         delete iter->second;
         mActiveCells.erase (iter);