[ekiga/ds-gtk-application] GActorMenu: Handle gracefully menus with no Actions.

[Damien Sandras <dsandras src gnome org>]

commit d64683bce842377760835ecb42fab6c590cae4de
Author: Damien Sandras <dsandras seconix com>
Date:   Sun Dec 7 17:27:36 2014 +0100

    GActorMenu: Handle gracefully menus with no Actions.

 lib/engine/gui/gtk-core/gactor-menu.cpp |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/lib/engine/gui/gtk-core/gactor-menu.cpp b/lib/engine/gui/gtk-core/gactor-menu.cpp
index dafe719..b844f7a 100644
--- a/lib/engine/gui/gtk-core/gactor-menu.cpp
+++ b/lib/engine/gui/gtk-core/gactor-menu.cpp
@@ -119,7 +119,12 @@ Ekiga::GActorMenu::get_model (const Ekiga::GActorMenuStore & store,
 GtkWidget *
 Ekiga::GActorMenu::get_menu (const Ekiga::GActorMenuStore & store)
 {
-  GtkWidget *menu = gtk_menu_new_from_model (get_model (store, false));
+  GMenuModel *model = get_model (store, false);
+
+  if (!model)
+    return NULL;
+
+  GtkWidget *menu = gtk_menu_new_from_model (model);
   gtk_widget_insert_action_group (menu, "win", G_ACTION_GROUP (g_application_get_default ()));
   g_object_ref (menu);