BUGFIX: Delete AMR metadata

Fixed a memory leak caused by not de-allocating the AMR metadata.

Change-Id: Ic5bda5c9a7c06bf85d4bd51ce35e35f1e2dc39e3

AMR/vtkAMRResampleFilter.cxx

@@ -80,6 +80,12 @@ vtkAMRResampleFilter::~vtkAMRResampleFilter()
     this->ROI->Delete();
     }
   this->ROI = NULL;
+
+  if( this->AMRMetaData != NULL )
+    {
+    this->AMRMetaData->Delete();
+    }
+  this->AMRMetaData = NULL;
 }
 
 //-----------------------------------------------------------------------------