GtkWidget *gis_plugin_get_config(GisPlugin *self)
{
g_return_val_if_fail(GIS_IS_PLUGIN(self), NULL);
- return GIS_PLUGIN_GET_INTERFACE(self)->get_config(self);
+ GisPluginInterface *iface = GIS_PLUGIN_GET_INTERFACE(self);
+ return iface->get_config ? iface->get_config (self) : NULL;
}