Fix clang warning

sway/handlers.c

@@ -105,7 +105,7 @@ static void update_panel_geometries(wlc_handle output) {
 }
 
 static void update_background_geometry(struct background_config *config) {
-	struct wlc_geometry geometry = { 0 };
+	struct wlc_geometry geometry = wlc_geometry_zero;
 	geometry.size = *wlc_output_get_resolution(config->output);
 	wlc_view_set_geometry(config->handle, 0, &geometry);
 }