shell,compositor-x11: Fix trivial memory leaks

Signed-off-by: Ryo Munakata <ryomnktml@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

desktop-shell/shell.c

@@ -6453,6 +6453,8 @@ shell_destroy(struct wl_listener *listener, void *data)
 		wl_client_destroy(shell->child.client);
 	}
 
+	wl_event_source_remove(shell->screensaver.timer);
+
 	wl_list_remove(&shell->idle_listener.link);
 	wl_list_remove(&shell->wake_listener.link);
 

src/compositor-x11.c

@@ -1454,6 +1454,8 @@ x11_compositor_get_wm_info(struct x11_compositor *c)
 		if (atom[i] == c->atom.net_wm_state_fullscreen)
 			c->has_net_wm_state_fullscreen = 1;
 	}
+
+	free(reply);
 }
 
 static void