message: simplify input check
diff: @@ -150,13 +150,8 @@ int main(int argc, char *argv[])
  args.PrintOptions(cout);
  }
  // check for vaild ODE solver option
  - switch (ode_solver_type)
  + if (ode_solver_type < 1 || ode_solver_type > 3)
  {
  - case 1:
  - case 2:
  - case 3:
  - break;
  - default:
  if (myid == 0)
  {
  cout << "Unknown ODE solver type: " << ode_solver_type << '\n';
  