/usr/share/doc/libunshield-dev/changelog.Debian.gz is in libunshield-dev 1.4.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libunshield-dev/../libunshield0/changelog.Debian.gz
/usr/share/doc/libunshield-dev/../libunshield0/changelog.Debian.gz