[empathy] check that logger is not NULL before unrefing it

[Guillaume Desmottes <gdesmott src gnome org>]

commit 27591216de0bdbf8cfecd562414faa34138a1a52
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Mon Mar 8 16:39:29 2010 +0100

    check that logger is not NULL before unrefing it

 libempathy/empathy-contact-manager.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/libempathy/empathy-contact-manager.c b/libempathy/empathy-contact-manager.c
index d0ba130..fd7b08b 100644
--- a/libempathy/empathy-contact-manager.c
+++ b/libempathy/empathy-contact-manager.c
@@ -375,7 +375,8 @@ contact_manager_finalize (GObject *object)
 
 	tp_proxy_signal_connection_disconnect (priv->favourite_contacts_changed_signal);
 
-	g_object_unref (priv->logger);
+	if (priv->logger != NULL)
+		g_object_unref (priv->logger);
 
 	g_hash_table_foreach (priv->lists,
 			      contact_manager_disconnect_foreach,