[PATCH v2 0/1] MR2067: wine32u: fix off-by-one bugs in MsgWaitForMultipleObjectsEx drivers

[Ivan Chikish (＠nekotekina)]

When count = 0, returned value may become -1 which seems wrong in
the case of successful process_events() call. Also MSDN suggests
that `count` may be a valid return value in this case. When -1 is
returned, it may cause SetLastError to -1 as well which is not a
valid error code AFAIK.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54405

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  v2: wine32u: move count fixup out of MsgWaitForMultipleObjectsEx drivers

https://gitlab.winehq.org/wine/wine/-/merge_requests/2067