make CellDataStorage derive from Subscriptor

diff --git a/include/deal.II/base/quadrature_point_data.h b/include/deal.II/base/quadrature_point_data.h
index 033bf734e8b0b1db9b6a55925000c41aa3f67170..6a51e7ae084855e928e38c8a19f5bde611c7d23d 100644 (file)
--- a/include/deal.II/base/quadrature_point_data.h
+++ b/include/deal.II/base/quadrature_point_data.h
@@ -57,7 +57,7 @@ DEAL_II_NAMESPACE_OPEN
  * @author Denis Davydov, Jean-Paul Pelteret, 2016
  */
 template <typename CellIteratorType, typename DataType>
-class CellDataStorage
+class CellDataStorage : public Subscriptor
 {
 public:
   /**
@@ -492,6 +492,8 @@ inline TransferableQuadraturePointData::~TransferableQuadraturePointData()
 template <typename CellIteratorType, typename DataType>
 CellDataStorage<CellIteratorType,DataType>::
 CellDataStorage()
+  :
+  Subscriptor()
 {}