wintrust: Implement CryptCATAdminCalcHashFromFileHandle, try 2

[Alexandre Julliard]

Maarten Lankhorst <m.b.lankhorst at gmail.com> writes:

> +        curpos.QuadPart = 0;
> +        SetFilePointerEx(hFile, curpos, &oldpos, FILE_CURRENT);
> +        SetFilePointerEx(hFile, curpos, NULL, FILE_BEGIN);

That's not thread-safe.

-- 
Alexandre Julliard
julliard at winehq.org