message: typo in variable name
diff: @@ -3371,23 +3371,23 @@ double GridFunction::ComputeLpError(const double p, Coefficient &exsol,
  {
  const IntegrationPoint &ip = ir->IntPoint(j);
  T->SetIntPoint(&ip);
  - double err_ip = fabs(vals(j) - exsol.Eval(*T, ip));
  + double diff = fabs(vals(j) - exsol.Eval(*T, ip));
  if (p < infinity())
  {
  - err_ip = pow(err_ip, p);
  + diff = pow(diff, p);
  if (weight)
  {
  diff *= weight->Eval(*T, ip);
  }
  - error += ip.weight * T->Weight() * err_ip;
  + error += ip.weight * T->Weight() * diff;
  }
  else
  {
  if (weight)
  {
  - err_ip *= weight->Eval(*T, ip);
  + diff *= weight->Eval(*T, ip);
  }
  - error = std::max(error, err_ip);
  + error = std::max(error, diff);
  }
  }
  }
  