[FIX] Bug 356863 : corrected menuitem's action allottment (ref:jvo,uco)

bzr revid: jvo@tinyerp.com-20090417095637-yn4jhpr36na9sbl8

bin/addons/base/ir/ir_ui_menu.py

@@ -200,7 +200,7 @@ class ir_ui_menu(osv.osv):
         if values_ids:
             values_obj.write(cursor, user, values_ids[0], {'value': value},
                     context=ctx)
-        else:
+        elif ctx:
             values_obj.create(cursor, user, {
                 'name': 'Menuitem',
                 'model': self._name,