message: Suppress unused variable warning
diff: @@ -1556,6 +1556,8 @@ void NCMesh::Refine(const Array<Refinement>& refinements)
  #if defined(MFEM_DEBUG) && !defined(MFEM_USE_MPI)
  mfem::out << "Refined " << refinements.Size() << " + " << nforced
  << " elements" << std::endl;
  +#else
  + MFEM_CONTRACT_VAR(nforced);
  #endif
  ref_stack.DeleteAll();
  