[gnome-desktop] wallclock: Simplify dispose()

[Bastien Nocera <hadess src gnome org>]

commit 98d57e1310d225c23394c8a63b79365d4609203f
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Apr 3 10:22:32 2017 +0200

    wallclock: Simplify dispose()

 libgnome-desktop/gnome-wall-clock.c |   11 ++---------
 1 files changed, 2 insertions(+), 9 deletions(-)
---
diff --git a/libgnome-desktop/gnome-wall-clock.c b/libgnome-desktop/gnome-wall-clock.c
index 1cd67a8..e75965a 100644
--- a/libgnome-desktop/gnome-wall-clock.c
+++ b/libgnome-desktop/gnome-wall-clock.c
@@ -104,15 +104,8 @@ gnome_wall_clock_dispose (GObject *object)
                self->priv->clock_update_id = 0;
        }
 
-       if (self->priv->tz_monitor != NULL) {
-               g_object_unref (self->priv->tz_monitor);
-               self->priv->tz_monitor = NULL;
-       }
-
-       if (self->priv->desktop_settings != NULL) {
-               g_object_unref (self->priv->desktop_settings);
-               self->priv->desktop_settings = NULL;
-       }
+       g_clear_object (&self->priv->tz_monitor);
+       g_clear_object (&self->priv->desktop_settings);
 
        G_OBJECT_CLASS (gnome_wall_clock_parent_class)->dispose (object);
 }