[empathy] accounts_dialog_account_display_name_changed_cb: check that accounts_dialog_model_get_selected_setti

[Guillaume Desmottes <gdesmott src gnome org>]

commit 90f62ff1b5f9077482744ec8e218089d07fb8dc2
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Mon Oct 5 15:07:15 2009 +0100

    accounts_dialog_account_display_name_changed_cb: check that accounts_dialog_model_get_selected_settings didn't return NULL (#597416)
    
    All the other callers of this function cope with setting being NULL so
    this one should do as well.

 src/empathy-accounts-dialog.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/empathy-accounts-dialog.c b/src/empathy-accounts-dialog.c
index ea61732..77bf374 100644
--- a/src/empathy-accounts-dialog.c
+++ b/src/empathy-accounts-dialog.c
@@ -1224,6 +1224,9 @@ accounts_dialog_account_display_name_changed_cb (EmpathyAccount *account,
   display_name = empathy_account_get_display_name (account);
   model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->treeview));
   settings = accounts_dialog_model_get_selected_settings (dialog);
+  if (settings == NULL)
+    return;
+
   selected_account = empathy_account_settings_get_account (settings);
 
   if (accounts_dialog_get_account_iter (dialog, account, &iter))