dbus_error_init (&err);
spi_global_app_data->app_bus_addr [0] = '\0';
g_main_context_unref (spi_global_app_data->main_context);
dbus_error_init (&err);
spi_global_app_data->app_bus_addr [0] = '\0';
g_main_context_unref (spi_global_app_data->main_context);