[Mesa-dev] AppVeyor fails with 404 during wget

[Steven Toth]

>> It looks like the winflexbison URL changed some time ago.  But this
>> didn't cause any build failures because the ZIP was being recovered from
>> the cache.
>>
>> I'll look into it.
>>
>> Jose
>
>
> It looks the archive was moved into a old_versions subdir.
>
> The attached patch should fix it.  Could you please try it on your repos and
> confirm.

Much better, compilation starts correctly now, thanks.

- Steve