message: Extract selection of skin before drawImageRect call in TextField
diff: @@ -318,7 +318,8 @@ void TextField::update()
  auto& renderer = Utility<Renderer>::get();
  const auto showFocused = hasFocus() && editable();
  - renderer.drawImageRect(mRect, (showFocused ? mSkinFocus : mSkinNormal));
  + const auto& skin = showFocused ? mSkinFocus : mSkinNormal;
  + renderer.drawImageRect(mRect, skin);
  if (highlight()) { renderer.drawBox(mRect, NAS2D::Color::Yellow); }
  