message: Scrollbar: Minor simplication of the code using InnerRect data.
diff: @@ -4996,10 +4996,8 @@ void ImGui::Scrollbar(ImGuiLayoutType direction)
  const ImRect window_rect = window->Rect();
  const float border_size = window->WindowBorderSize;
  ImRect bb = horizontal
  - ? ImRect(window->Pos.x + border_size, window_rect.Max.y - style.ScrollbarSize, window_rect.Max.x - other_scrollbar_size_w - border_size, window_rect.Max.y - border_size)
  - : ImRect(window_rect.Max.x - style.ScrollbarSize, window->Pos.y + border_size, window_rect.Max.x - border_size, window_rect.Max.y - other_scrollbar_size_w - border_size);
  - if (!horizontal)
  - bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f);
  + ? ImRect(window->InnerRect.Min.x, window_rect.Max.y - style.ScrollbarSize, window->InnerRect.Max.x, window_rect.Max.y - border_size)
  + : ImRect(window_rect.Max.x - style.ScrollbarSize, window->InnerRect.Min.y, window_rect.Max.x - border_size, window->InnerRect.Max.y);
  if (bb.GetWidth() <= 0.0f || bb.GetHeight() <= 0.0f)
  return;
  