Re: [PATCH 0/4] MR5436: win32u: Replace sprintf with snprintf to avoid deprecation warnings on macOS.

[Rémi Bernon]

Nit: Maybe make the buffer size depend on `SID_MAX_SUB_AUTHORITIES` to be safe (ie: `16 + 11 * (2 + SID_MAX_SUB_AUTHORITIES) + 1`), or C_ASSERT that it is larger?

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https://gitlab.winehq.org/wine/wine/-/merge_requests/5436#note_66622