[tz] Tzdb build issue

[Doug Ewell]

Naveen kumar replied to Paul Eggert:

>> Is the problem new to tzdb-2023c, or do you see it with earlier
>> versions of tzdb?
>
> 3.
> I am facing this issue in the latest version tzdb-2023c.

Although Naveen didn’t actually answer Paul’s question of whether the problem is new to 2023c, it seems reasonable to guess it is related to these changes implemented in 2023a, which Paul’s subsequent questions alluded to:

| Briefly:
|   [...]
| The code now defaults to C99 or later.
| Fix use of C23 attributes.

--
Doug Ewell, CC, ALB | Lakewood, CO, US | ewellic.org