Re: [PATCH v6 0/2] MR8466: ntdll: Also restore rbp before calling user mode callback.

[Yuxuan Shui (＠yshui)]

changes: 
- non-volatile registers are now zeroed based on test findings.
- add test case (is user32:win the right place for this?)

ping @gofman

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https://gitlab.winehq.org/wine/wine/-/merge_requests/8466#note_108990