message: apps: catch() with "const reference"
diff: @@ -217,7 +217,7 @@ int main(int argc, char** argv)
  (*it)->resetState();
  }
  }
  - catch (std::runtime_error exp) {
  + catch (const std::runtime_error& exp) {
  std::cout << exp.what() << std::endl;
  }
  