[gnome-initial-setup] timezone: Fix a crasher

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

commit a48989c8fed80f3875d68eb7fd3285103b892a9c
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Oct 31 14:25:17 2013 -0400

    timezone: Fix a crasher
    
    If we set_location of NULL.

 .../pages/timezone/gis-timezone-page.c             |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/gnome-initial-setup/pages/timezone/gis-timezone-page.c 
b/gnome-initial-setup/pages/timezone/gis-timezone-page.c
index d4fc0c2..cb87080 100644
--- a/gnome-initial-setup/pages/timezone/gis-timezone-page.c
+++ b/gnome-initial-setup/pages/timezone/gis-timezone-page.c
@@ -103,8 +103,7 @@ set_location (GisTimezonePage  *page,
 {
   GisTimezonePagePrivate *priv = gis_timezone_page_get_instance_private (page);
 
-  if (priv->current_location)
-    gweather_location_unref (priv->current_location);
+  g_clear_pointer (&priv->current_location, gweather_location_unref);
 
   cc_timezone_map_set_location (CC_TIMEZONE_MAP (priv->map), location);