[gnome-builder] update-manager: log success after starting update monitor

[Christian Hergert <chergert src gnome org>]

commit 66d2e779eaf0b0215a0d7c0362a52393120d6f0a
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 16 18:15:15 2020 -0800

    update-manager: log success after starting update monitor

 src/plugins/update-manager/gbp-update-manager-app-addin.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/plugins/update-manager/gbp-update-manager-app-addin.c 
b/src/plugins/update-manager/gbp-update-manager-app-addin.c
index 2d8778f22..90f67de64 100644
--- a/src/plugins/update-manager/gbp-update-manager-app-addin.c
+++ b/src/plugins/update-manager/gbp-update-manager-app-addin.c
@@ -191,6 +191,8 @@ gbp_update_manager_app_addin_start_cb (GObject      *object,
 
   if (!xdp_portal_update_monitor_start_finish (portal, result, &error))
     g_warning ("Failed to start update monitor: %s", error->message);
+  else
+    g_message ("Waiting for application updates from libportal");
 
   IDE_EXIT;
 }