Re: [PATCH v6 0/9] MR6323: winewayland: Support GL/VK rendering in child windows (alt).

[Alexandros Frantzis (＠afrantzis)]

Alexandros Frantzis (@afrantzis) commented about dlls/winewayland.drv/opengl.c:
>  gl->hwnd = hwnd;
>  gl->swap_interval = 1;
>
> - NtUserGetClientRect(gl->hwnd, &client_rect, NtUserGetDpiForWindow(gl->hwnd));

When creating pbuffers we have hwnd=0, which causes `NtUserGetClientRect` to fail and client_rect to remain uninitialized, leading to problems below.