[zlib] Sync with zlib 1.2.13.1, patch 4 of N

Ported:
 - Fix warnings on test/infcover.c.

See:  https://github.com/madler/zlib/commit/3365464851a972fe8ad217b93e80c7cd185a8179

Bug: 1447443
Change-Id: Ie2ddd1272b9150e5fbb452c650d2c526041f3350
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4595579
Reviewed-by: Hans Wennborg <hans@chromium.org>
Reviewed-by: Chris Blume <cblume@chromium.org>
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1154570}
NOKEYCHECK=True
GitOrigin-RevId: c65dd614d5d075304d9fda258ae599d36df63e6e