[libgweather] test_locations: don't warn if the current location is null

[Giovanni Campagna <gcampagna src gnome org>]

commit 8f788d826dc0deef4ad09b2e6db0a98b91ed3f3a
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Fri Aug 1 11:36:35 2014 +0200

    test_locations: don't warn if the current location is null
    
    It's a perfectly legitimate condition when clearing the entry
    
    https://bugzilla.gnome.org/show_bug.cgi?id=732728

 libgweather/test_locations.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/libgweather/test_locations.c b/libgweather/test_locations.c
index afeffb9..40d1b94 100644
--- a/libgweather/test_locations.c
+++ b/libgweather/test_locations.c
@@ -17,7 +17,9 @@ location_changed (GObject *object, GParamSpec *param, gpointer tzmenu)
     GWeatherTimezone *zone;
 
     loc = gweather_location_entry_get_location (entry);
-    g_return_if_fail (loc != NULL);
+    if (loc == NULL)
+      return;
+
     zone = gweather_location_get_timezone (loc);
     if (zone)
        gweather_timezone_menu_set_tzid (tzmenu, gweather_timezone_get_tzid (zone));