DBus Inhibit via ScreenSaver is broken

[VirtCode]

DBus inhibits via ScreenSaver are broken since #96, see #96 (comment)

The locks are created correctly, but are not removed. It is odd that only one ScreenSaver inhibit: blah blah... message is printed for a resume and a pause, instead of two as before (one with 1 and one 0). I did insert some more logs, and the callback for UnInhibit seems to just never be called.

For example, pausing and resuming a video in ff results in the following

[LOG] wayland done, registering dbus
[LOG] Using dbus path /org/freedesktop/login1/session/_33
[LOG] ScreenSaver inhibit: true dbus message from  (owner: :1.16) with content video-playing
[LOG] Inhibit locks: 1
[LOG] Cookie 1337 sent
[LOG] ScreenSaver inhibit: true dbus message from  (owner: :1.16) with content video-playing
[LOG] Inhibit locks: 2
[LOG] Cookie 1338 sent
[LOG] ScreenSaver inhibit: true dbus message from  (owner: :1.16) with content video-playing
[LOG] Inhibit locks: 3
[LOG] Cookie 1339 sent
[LOG] ScreenSaver inhibit: true dbus message from  (owner: :1.16) with content video-playing
[LOG] Inhibit locks: 4
[LOG] Cookie 1340 sent
[LOG] ScreenSaver inhibit: true dbus message from  (owner: :1.16) with content video-playing
[LOG] Inhibit locks: 5
[LOG] Cookie 1341 sent