message: Mark STRUCTURE_ICONS as const
diff: @@ -11,7 +11,7 @@ using namespace NAS2D;
  const int LIST_ITEM_HEIGHT = 58;
  -Image* STRUCTURE_ICONS = nullptr;
  +const Image* STRUCTURE_ICONS = nullptr;
  static const Font* MAIN_FONT = nullptr;
  static const Font* MAIN_FONT_BOLD = nullptr;
  