[PATCH v2 0/3] MR10190: winu32: Try harder to replace the old drawable everywhere.

[Paul Gofman (＠gofman)]

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  v2: win32u: Also try to use DC own drawable in get_updated_drawable() when context is flushed.
      win32u: Do not keep old drawable as window unused if it was replaced.
      opengl32: Don't access drawable after wgl_context_flush() in flush_context().
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10190