[gnome-settings-daemon/gnome-3-0] updates: deal with absence of gnome-session gracefully

[Bastien Nocera <hadess src gnome org>]

commit 5c931cd037cdcc9b5dbb48371b8edc993a8872c0
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon May 2 14:23:53 2011 -0400

    updates: deal with absence of gnome-session gracefully
    
    This was leading to crashes when g-s-d got started under xfce.
    Reported and tested in
    http://bugzilla.redhat.com/show_bug.cgi?id=698533

 plugins/updates/gsd-updates-refresh.c |   13 +++++++++----
 1 files changed, 9 insertions(+), 4 deletions(-)
---
diff --git a/plugins/updates/gsd-updates-refresh.c b/plugins/updates/gsd-updates-refresh.c
index 15e6917..60d5f80 100644
--- a/plugins/updates/gsd-updates-refresh.c
+++ b/plugins/updates/gsd-updates-refresh.c
@@ -560,7 +560,7 @@ gsd_updates_refresh_init (GsdUpdatesRefresh *refresh)
         /* use gnome-session for the idle detection */
         refresh->priv->proxy_session =
                 g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
-                                               G_DBUS_PROXY_FLAGS_NONE,
+                                               G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
                                                NULL, /* GDBusInterfaceInfo */
                                                "org.gnome.SessionManager",
                                                "/org/gnome/SessionManager/Presence",
@@ -578,9 +578,14 @@ gsd_updates_refresh_init (GsdUpdatesRefresh *refresh)
                                   refresh);
                 status = g_dbus_proxy_get_cached_property (refresh->priv->proxy_session,
                                                            "status");
-                g_variant_get (status, "u", &status_code);
-                refresh->priv->session_idle = (status_code == PRESENCE_STATUS_IDLE);
-                g_variant_unref (status);
+                if (status) {
+                        g_variant_get (status, "u", &status_code);
+                        refresh->priv->session_idle = (status_code == PRESENCE_STATUS_IDLE);
+                        g_variant_unref (status);
+                }
+                else {
+                        refresh->priv->session_idle = FALSE;
+                }
         }
 
         /* we check this in case we miss one of the async signals */