shell: Use wl_resource_for_each() for sending out workspace status

src/shell.c

@@ -717,16 +717,13 @@ workspace_translate_in(struct workspace *ws, double fraction)
 static void
 broadcast_current_workspace_state(struct desktop_shell *shell)
 {
-	struct wl_list *link;
+	struct wl_resource *resource;
 
-	for (link = shell->workspaces.client_list.next;
+	wl_resource_for_each(resource, &shell->workspaces.client_list)
-	     link != &shell->workspaces.client_list;
+		workspace_manager_send_state(resource,
-	     link = link->next) {
-		workspace_manager_send_state(wl_resource_from_link(link),
 					     shell->workspaces.current,
 					     shell->workspaces.num);
 }
-}
 
 static void
 reverse_workspace_change_animation(struct desktop_shell *shell,