/usr/share/doc/libvisual-0.4-dev/changelog.Debian.gz is in libvisual-0.4-dev 0.4.0-8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libvisual-0.4-dev/../libvisual-0.4-0/changelog.Debian.gz