Fix deleting object physics again.

apps/opencs/view/world/physicssystem.cpp

@@ -39,7 +39,7 @@ namespace CSVWorld
         Ogre::SceneManager *sceneManager = findSceneManager(sceneNodeName);
         if(sceneManager)
         {
-            // update maps
+            // update maps (NOTE: sometimes replaced)
             mSceneNodeToRefId[sceneNodeName] = referenceId;
             mSceneNodeToMesh[sceneNodeName] = mesh;
             mRefIdToSceneNode[referenceId][sceneManager] = sceneNodeName;
@@ -126,14 +126,11 @@ namespace CSVWorld
         std::string referenceId = mSceneNodeToRefId[sceneNodeName];
 
         if(referenceId != "")
-        {
-            if(mRefIdToSceneNode.find(referenceId) == mRefIdToSceneNode.end())
         {
             mEngine->removeRigidBody(referenceId);
             mEngine->deleteRigidBody(referenceId);
         }
     }
-    }
 
     void PhysicsSystem::replaceObject(const std::string &sceneNodeName, float scale,
             const Ogre::Vector3 &position, const Ogre::Quaternion &rotation, bool placeable)