[zlib] Re-sync with zlib 1.2.12, patch 9 of N

Ported:
- Don't bother computing check value after successful inflateSync()

Bug: 1032721
Change-Id: If96f53a341203df3b68e63d01136b5287269b62b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3574954


Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Cr-Commit-Position: refs/heads/main@{#989673}
NOKEYCHECK=True
GitOrigin-RevId: 463fef05dafc702713d5001178cb1e47376739ff