message: Simplify check if we should display a state string
diff: @@ -43,7 +43,7 @@ static Warehouse* SELECTED_WAREHOUSE = nullptr;
  */
  static bool useStateString(StructureState _state)
  {
  - return _state == StructureState::Disabled || _state == StructureState::Destroyed || _state == StructureState::UnderConstruction || _state == StructureState::Idle;
  + return _state != StructureState::Operational;
  }
  