CarpetLib: Change API to obtain pointer to grid function data

Change the API to obtain a pointer to grid function data:
- Use a function "typed_data_pointer" instead of overloading the ()
  operator (because this looks nicer)
- Don't use a virtual function (because this isn't needed)
- Update all uses

1 files changed, 1 insertions, 1 deletions

diff --git a/Carpet/CarpetIOHDF5/src/OutputSlice.cc b/Carpet/CarpetIOHDF5/src/OutputSlice.cc
index f0d570ced..9a691be5f 100644
--- a/Carpet/CarpetIOHDF5/src/OutputSlice.cc
+++ b/Carpet/CarpetIOHDF5/src/OutputSlice.cc
@@ -624,7 +624,7 @@ namespace CarpetIOHDF5 {
               if (dist::rank() == proc) {
                 const ggf* const ff =
                   arrdata.at(group).at(m).data.at(n + n_min);
-                datas.at(n) = (*ff) (tl, rl, lc, ml);
+                datas.at(n) = ff->data_pointer (tl, rl, lc, ml);
               } else {
                 datas.at(n) = NULL;
               }