[gsettings] Fix crashes in notification code
[gsettings] Fix crashes in notification code

GNOME/gconf,Distrotech/GConf,GNOME/gconf,Distrotech/GConf,hyperair/gconf-gdbus,Distrotech/GConf,hyperair/gconf-gdbus,hyperair/gconf-gdbus,GNOME/gconf,hyperair/gconf-gdbus,Distrotech/GConf,GNOME/gconf