message: Fixed unreferenced variable warnings.
diff: @@ -3749,9 +3749,9 @@ bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags ext
  void ImGui::EndPopup()
  {
  - ImGuiWindow* window = GetCurrentWindow();
  - IM_ASSERT(window->Flags & ImGuiWindowFlags_Popup); // Mismatched BeginPopup()/EndPopup() calls
  - IM_ASSERT(GImGui->CurrentPopupStack.Size > 0);
  + ImGuiContext& g = *GImGui; (void)g;
  + IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup); // Mismatched BeginPopup()/EndPopup() calls
  + IM_ASSERT(g.CurrentPopupStack.Size > 0);
  End();
  }
  @@ -4280,7 +4280,6 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
  window->WindowPadding = ImVec2(0.0f, (flags & ImGuiWindowFlags_MenuBar) ? style.WindowPadding.y : 0.0f);
  const float window_rounding = window->WindowRounding;
  const float window_border_size = window->WindowBorderSize;
  - const ImVec2 window_padding = window->WindowPadding;
  // Calculate auto-fit size, handle automatic resize
  const ImVec2 size_auto_fit = CalcSizeAutoFit(window);
  