[PATCH v2] Cygwin: Fix error return for madvise()

[Christian Franke]

Takashi Yano wrote:
> Hi Christian,
>
> On Fri, 10 Jul 2026 13:13:43 +0200
> Christian Franke wrote:
>> Hi Mark,
>>
>> Mark Geisert wrote:
>>> ...
>>> I prefer to keep both 'goto out' so there's just one exit from the
>>> function to aid future debugging. Perhaps that's an old-school habit.
>> :-)
>>
>> Don't take me wrong, the patch is GTG, IMO.
> I agree. Would you push the patch?
>

Done.