Re: [PATCH 0/4] MR7219: win32u, winex11.drv: Fix multiple Vulkan surfaces handling.

[Rémi Bernon (＠rbernon)]

Rémi Bernon (@rbernon) commented about dlls/winex11.drv/vulkan.c:
>  HRGN region;
>  HDC hdc;
>
> - if (!hwnd) return;

This should probably be moved to win32u instead, and avoid calling into drivers with detached surfaces / NULL hwnd?