[gnome-desktop] idle-monitor: Use g_clear_pointer

[Jasper St. Pierre <jstpierre src gnome org>]

commit fffcc2bd58f54e8e4725d9dc3a90869aa2d731cf
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Mar 25 15:55:40 2013 -0400

    idle-monitor: Use g_clear_pointer
    
    https://bugzilla.gnome.org/show_bug.cgi?id=696522

 libgnome-desktop/gnome-idle-monitor.c |    9 +++------
 1 files changed, 3 insertions(+), 6 deletions(-)
---
diff --git a/libgnome-desktop/gnome-idle-monitor.c b/libgnome-desktop/gnome-idle-monitor.c
index 8242945..4e6e220 100644
--- a/libgnome-desktop/gnome-idle-monitor.c
+++ b/libgnome-desktop/gnome-idle-monitor.c
@@ -298,15 +298,12 @@ gnome_idle_monitor_dispose (GObject *object)
        GnomeIdleMonitor *monitor;
 
        monitor = GNOME_IDLE_MONITOR (object);
-       if (monitor->priv->watches != NULL) {
-               g_hash_table_destroy (monitor->priv->watches);
-               monitor->priv->watches = NULL;
-       }
-
-       gdk_window_remove_filter (NULL, (GdkFilterFunc)xevent_filter, monitor);
 
+       g_clear_pointer (&monitor->priv->watches, g_hash_table_destroy);
        g_clear_object (&monitor->priv->device);
 
+       gdk_window_remove_filter (NULL, (GdkFilterFunc)xevent_filter, monitor);
+
        G_OBJECT_CLASS (gnome_idle_monitor_parent_class)->dispose (object);
 }