message: Simplify IconGrid::itemAvailable(const std::string&, bool)
diff: @@ -200,10 +200,9 @@ void IconGrid::addItem(const std::string& name, int sheetIndex, int meta)
  */
  void IconGrid::itemAvailable(const std::string& item, bool isItemAvailable)
  {
  - const auto lowerCaseTarget = toLowercase(item);
  for (auto& iconItem : mIconItemList)
  {
  - if (toLowercase(iconItem.name) == lowerCaseTarget)
  + if (iconItem.name == item)
  {
  iconItem.available = isItemAvailable;
  return;
  