[zlib] Re-sync with zlib 1.2.12, patch 2 of N

Ported:
- Fix bug when window full in deflate_stored()
- Fix CLEAR_HASH macro to be usable as a single statement
- Avoid a conversion error in gzseek when off_t type too small

Bug: 1032721
Change-Id: I0f023f57affbd7ad4d163823f43cfbe51f770129
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3561506


Reviewed-by: Adenilson Cavalcanti <cavalcantii@chromium.org>
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/main@{#987297}
NOKEYCHECK=True
GitOrigin-RevId: f0e9b945d0c9d5bb8d31b044326fd646aa7f53d8