zlib: properly clamp to uLong #28544

Job	Run time
config	8s
fuzz smoke test	1m 31s
win+Meson build	4m 36s
win build	5m 22s
osx-clang (macos-14)	6h 0m 17s
osx-reftable (macos-14)	35m 13s
osx-gcc (macos-14)	6h 0m 19s
documentation	7m 16s
osx-meson (macos-14)	6h 0m 18s
static-analysis	6m 2s
sparse	3m 30s
rust-analysis	1m 30s
win+VS build	0s
linux-leaks (ubuntu:rolling)	49m 22s
linux-reftable (ubuntu:rolling)	25m 25s
almalinux-8 (almalinux:8)	23m 30s
linux-breaking-changes (ubuntu:rolling)	24m 58s
linux-TEST-vars (ubuntu:20.04)	28m 9s
linux-sha256 (ubuntu:rolling)	24m 50s
linux-meson (ubuntu:rolling)	22m 58s
debian-11 (debian:11)	25m 30s
linux-reftable-leaks (ubuntu:rolling)	47m 18s
linux-asan-ubsan (ubuntu:rolling)	1h 10m 42s
linux-musl-meson (alpine:latest)	23m 53s
linux32 (i386/ubuntu:focal)	6h 0m 3s
fedora-breaking-changes-meson (fedora:latest)	21m 13s
win+VS test	0s
win+Meson test (2)	1h 0m 21s
win+Meson test (1)	6m 0s
win+Meson test (0)	8m 44s
win+Meson test (7)	8m 42s
win+Meson test (3)	12m 28s
win+Meson test (8)	10m 57s
win+Meson test (6)	12m 21s
win+Meson test (4)	11m 7s
win+Meson test (5)	8m 42s
win+Meson test (9)	6m 57s
win test (6)	9m 33s
win test (0)	12m 12s
win test (3)	10m 1s
win test (7)	6m 59s
win test (5)	14m 5s
win test (9)	5m 59s
win test (4)	47m 12s
win test (8)	7m 31s
win test (2)	7m 22s
win test (1)	6m 31s
	1d 12h 7m 37s

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