[empathy] contact_selector_dialog_account_changed_cb: cope with tp_account_get_connection being NULL

[Guillaume Desmottes <gdesmott src gnome org>]

commit 00a119d8f895506897c86165c5b7592c3ff4f787
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Mon Mar 15 10:24:14 2010 +0100

    contact_selector_dialog_account_changed_cb: cope with tp_account_get_connection being NULL

 libempathy-gtk/empathy-contact-selector-dialog.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/libempathy-gtk/empathy-contact-selector-dialog.c b/libempathy-gtk/empathy-contact-selector-dialog.c
index 3428b05..056890b 100644
--- a/libempathy-gtk/empathy-contact-selector-dialog.c
+++ b/libempathy-gtk/empathy-contact-selector-dialog.c
@@ -110,6 +110,9 @@ contact_selector_dialog_account_changed_cb (GtkWidget *widget,
           EmpathyTpContactList *contact_list;
 
           connection = tp_account_get_connection (priv->filter_account);
+          if (connection == NULL)
+            return;
+
           contact_list = empathy_contact_manager_get_list (
               priv->contact_manager, connection);