Print an error message if g_dbus_setup_bus fails.
Print an error message if g_dbus_setup_bus fails.

That is standard processing when dbus_error_is_set() returns true, according to
dbus/dbus/dbus-errors.c.
In this case of g_dbus_setup_bus(), it provides extra help for determing the
specific cause of the error.

silent-snowman/bluez,pkarasev3/bluez,ComputeCycles/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,pkarasev3/bluez,mapfau/bluez,mapfau/bluez,mapfau/bluez,silent-snowman/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,ComputeCycles/bluez,ComputeCycles/bluez,silent-snowman/bluez,pstglia/external-bluetooth-bluez,mapfau/bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez