[spaces.fv.default] minor fix

dune/gdt/playground/spaces/finitevolume/default.hh

@@ -82,8 +82,7 @@ public:
   Default(const std::shared_ptr<const GridViewType>& gv)
     : grid_view_(gv)
     , mapper_(std::make_shared<MapperType>(*grid_view_))
-    , communicator_(CommunicationChooserType::create(gridPart_->gridView()))
-    , communicator_prepared_(false)
+    , communicator_(CommunicationChooserType::create(*grid_view_))
   {
   }