git: b37eb25116f9..900147a461df - vendor/zlib - vendor branch updated

From: Xin LI <delphij_at_FreeBSD.org>
Date: Tue, 05 Sep 2023 03:11:36 UTC
The branch vendor/zlib has been updated by delphij:

URL: https://cgit.FreeBSD.org/src/log/?id=b37eb25116f9..900147a461df

900147a461df examples: define functions as static ones.