build fix (only two args to g_conf_sources_query_value())
build fix (only two args to g_conf_sources_query_value())

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