BUG: Make sure ProcessMRMLEvents is called all the way to the base no…

…de class

The transformable node did not call the ProcessMRMLEvents function from its superclass, so the storable node and base MRML node classes did not have a chance to handle some events.

Libs/MRML/Core/vtkMRMLTransformableNode.cxx

@@ -130,8 +130,10 @@ bool vtkMRMLTransformableNode::SetAndObserveTransformNodeID(const char *transfor
 //---------------------------------------------------------------------------
 void vtkMRMLTransformableNode::ProcessMRMLEvents ( vtkObject *caller,
                                                   unsigned long event,
-                                                  void *vtkNotUsed(callData) )
+                                                  void *callData )
 {
+  Superclass::ProcessMRMLEvents(caller, event, callData);
+
   // as retrieving the parent transform node can be costly (browse the scene)
   // do some checks here to prevent retrieving the node for nothing.
   if (caller == nullptr ||