/usr/share/doc/libwinpr-dbg/changelog.Debian.gz is in libwinpr-dbg 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libwinpr-dbg/../libwinpr-asn1-0.1/changelog.Debian.gz