[PATCH 0/1] MR21: include/guiddef.h: use Mingw64's __uuidof when present

[eric pouech (＠epo)]

otherwise Wine's and Mingw64's __uuidof() enter in conflict (C++)

Signed-off-by: Eric Pouech <eric.pouech(a)gmail.com>

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https://gitlab.winehq.org/wine/wine/-/merge_requests/21