It seems we are missing some code from upstream unzip.c:
https://gist.github.com/Adenilson/07761cff4c9b5e267d6c9707061d6263

This change was introduced in hash (abf180a067) for zlib 1.2.3 (Sep 2011), but with no message describing the reason.

It is worthwhile to identify the reason and patch Chromium's zlib with the missing part.