refs #11393. Update header location.

Code/Mantid/Framework/MDAlgorithms/src/SmoothMD.cpp

@@ -10,7 +10,7 @@
 #include "MantidKernel/MandatoryValidator.h"
 #include "MantidKernel/PropertyWithValue.h"
 #include "MantidKernel/MultiThreaded.h"
-#include "MantidMDEvents/MDHistoWorkspaceIterator.h"
+#include "MantidDataObjects/MDHistoWorkspaceIterator.h"
 #include <boost/make_shared.hpp>
 #include <vector>
 #include <map>

Code/Mantid/Framework/MDAlgorithms/test/SmoothMDTest.h

@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 #include "MantidMDAlgorithms/SmoothMD.h"
-#include "MantidMDEvents/MDHistoWorkspace.h"
+#include "MantidDataObjects/MDHistoWorkspace.h"
 #include "MantidTestHelpers/MDEventsTestHelper.h"
 #include "MantidAPI/IMDHistoWorkspace.h"
 #include <vector>