https://svnweb.freebsd.org/ports?view=revision&revision=431187 has changed a directory for machine-id. So s|/lib/dbus/machine-id|/db/dbus/machine-id|g is not needed.
A commit references this bug: Author: tijl Date: Thu May 4 12:08:13 UTC 2017 New revision: 440100 URL: https://svnweb.freebsd.org/changeset/ports/440100 Log: r431187 moved machine-id to the upstream default location. Remove patching of the path in audio/pulseaudio and devel/glib20. PR: 218983, 218984 Changes: head/audio/pulseaudio/Makefile head/devel/glib20/Makefile