Use wlr_client_buffer

Update for breaking changes in [1].

[1]: https://github.com/swaywm/wlroots/pull/2043

include/sway/tree/view.h

@@ -80,7 +80,7 @@ struct sway_view {
 	bool allow_request_urgent;
 	struct wl_event_source *urgent_timer;
 
-	struct wlr_buffer *saved_buffer;
+	struct wlr_client_buffer *saved_buffer;
 	int saved_buffer_width, saved_buffer_height;
 
 	// The geometry for whatever the client is committing, regardless of

sway/desktop/output.c

@@ -501,7 +501,7 @@ static bool scan_out_fullscreen_view(struct sway_output *output,
 	wlr_presentation_surface_sampled_on_output(server.presentation, surface,
 		wlr_output);
 
-	if (!wlr_output_attach_buffer(wlr_output, surface->buffer)) {
+	if (!wlr_output_attach_buffer(wlr_output, &surface->buffer->base)) {
 		return false;
 	}
 	return wlr_output_commit(wlr_output);

sway/tree/view.c

@@ -1154,7 +1154,7 @@ void view_remove_saved_buffer(struct sway_view *view) {
 	if (!sway_assert(view->saved_buffer, "Expected a saved buffer")) {
 		return;
 	}
-	wlr_buffer_unref(view->saved_buffer);
+	wlr_buffer_unref(&view->saved_buffer->base);
 	view->saved_buffer = NULL;
 }
 
@@ -1163,7 +1163,8 @@ void view_save_buffer(struct sway_view *view) {
 		view_remove_saved_buffer(view);
 	}
 	if (view->surface && wlr_surface_has_buffer(view->surface)) {
-		view->saved_buffer = wlr_buffer_ref(view->surface->buffer);
+		wlr_buffer_ref(&view->surface->buffer->base);
+		view->saved_buffer = view->surface->buffer;
 		view->saved_buffer_width = view->surface->current.width;
 		view->saved_buffer_height = view->surface->current.height;
 	}