[gnome-settings-daemon/wip/hadess/better-sdl-metadata] Apply suggestion to plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c

[Bastien Nocera <hadess src gnome org>]

commit bb92b4f6fb3a6b11fa7400efe4dd5fe12cc76125
Author: Bastien Nocera <hadess hadess net>
Date:   Fri Apr 5 09:51:34 2019 +0000

    Apply suggestion to plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c

 plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c 
b/plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c
index 21ecb4ff..580dcb4b 100644
--- a/plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c
+++ b/plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c
@@ -280,7 +280,7 @@ get_app_id_from_flatpak (GDBusConnection *connection,
                                            "org.freedesktop.DBus",
                                            "GetConnectionUnixProcessID",
                                            g_variant_new ("(s)", sender),
-                                           NULL,
+                                           G_VARIANT_TYPE ("(u)"),
                                            G_DBUS_CALL_FLAGS_NO_AUTO_START,
                                            -1,
                                            cancellable,