message: get host pointer for tspec
diff: @@ -1496,6 +1496,7 @@ void DiscreteAdaptTC::FinalizeSerialDiscreteTargetSpec(const GridFunction &t)
  tspec_fes->FEColl(), ncomp);
  delete tspec_gf;
  + tspec.HostReadWrite();
  tspec_gf = new GridFunction(tspec_fesv, tspec);
  }
  