message: Use generic Configuration interface in validateVideoResolution()
diff: @@ -31,9 +31,9 @@ using namespace NAS2D;
  void validateVideoResolution()
  {
  Configuration& cf = Utility<Configuration>::get();
  -
  - if (cf.graphicsWidth() < constants::MINIMUM_WINDOW_WIDTH) { cf.graphicsWidth(constants::MINIMUM_WINDOW_WIDTH); }
  - if (cf.graphicsHeight() < constants::MINIMUM_WINDOW_HEIGHT) { cf.graphicsHeight(constants::MINIMUM_WINDOW_HEIGHT); }
  + auto& graphics = cf["graphics"];
  + if (graphics.get<int>("screenwidth") < constants::MINIMUM_WINDOW_WIDTH) { graphics.set("screenwidth", constants::MINIMUM_WINDOW_WIDTH); }
  + if (graphics.get<int>("screenheight") < constants::MINIMUM_WINDOW_HEIGHT) { graphics.set("screenheight", constants::MINIMUM_WINDOW_HEIGHT); }
  }
  