Re: pgsql: Sync our copy of the timezone library with IANA release tzcode20

I wrote:
> Michael Paquier <michael(at)paquier(dot)xyz> writes:
>> This is causing a compilation warning on Windows:
> ...so I think your compiler has a point. I shall complain to upstream.

The IANA folk want to fix it like this:

diff --git a/zic.c b/zic.c
index 8bf5628..a84703a 100644
--- a/zic.c
+++ b/zic.c
@@ -2145,7 +2145,7 @@ writezone(const char *const name, const char *const string, char version,
}
if (pass == 1 && !want_bloat()) {
utcnt = stdcnt = thisleapcnt = 0;
- thistimecnt = - locut - hicut;
+ thistimecnt = - (locut + hicut);
thistypecnt = thischarcnt = 1;
thistimelim = thistimei;
}

I'm not quite convinced whether that will silence the warning, but
at least it's a bit less unreadable.

regards, tom lane