Disable head controller for non-bipedal creatures (Fixes #2843, Fixes #2966)

apps/openmw/mwrender/animation.cpp

@@ -1320,6 +1320,8 @@ namespace MWRender
     {
         mHeadController = NULL;
 
+        if (mPtr.getClass().isBipedal(mPtr))
+        {
             NodeMap::iterator found = mNodeMap.find("bip01 head");
             if (found != mNodeMap.end() && dynamic_cast<osg::MatrixTransform*>(found->second.get()))
             {
@@ -1329,6 +1331,7 @@ namespace MWRender
                 mActiveControllers.insert(std::make_pair(node, mHeadController));
             }
         }
+    }
 
     void Animation::setHeadPitch(float pitchRadians)
     {