Silence compiler warning, hopefully.

Absorb commit e5e04c962a5d12eebbf867ca25905b3ccc34cbe0 from upstream
IANA code, in hopes of silencing warnings from MSVC about negating
a bool value.

Discussion: https://postgr.es/m/20190719035347.GJ1859@paquier.xyz

diff --git a/src/timezone/zic.c b/src/timezone/zic.c
index 4483c3bb130a279c3f9ad3fa7d69da415ffec48b..95ab8547126714cbf769f8ee4f3b511fc338d741 100644 (file)
--- a/src/timezone/zic.c
+++ b/src/timezone/zic.c
@@ -2398,7 +2398,7 @@ 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;
                }