message: Rename variable in OperatorJacobiSmoother::Setup().
diff: @@ -121,10 +121,10 @@ void OperatorJacobiSmoother::Setup()
  residual.UseDevice(true);
  const double delta = damping;
  auto D = diag.Read();
  - auto X = dinv.Write();
  - MFEM_FORALL(i, N, X[i] = delta / D[i]; );
  + auto DI = dinv.Write();
  + MFEM_FORALL(i, N, DI[i] = delta / D[i]; );
  auto I = ess_tdof_list.Read();
  - MFEM_FORALL(i, ess_tdof_list.Size(), X[I[i]] = delta; );
  + MFEM_FORALL(i, ess_tdof_list.Size(), DI[I[i]] = delta; );
  }
  void OperatorJacobiSmoother::Mult(const Vector &x, Vector &y) const
  