pass_to_dialog_controller: change transaction parent  _before_ we pass on new_request, to avoid a race condition where the soon-to-be-parent exits due to receiving the request
pass_to_dialog_controller: change transaction parent  _before_ we pass on new_request, to avoid a race condition where the soon-to-be-parent exits due to receiving the request

git-svn-id: 3f662d0c7823f96a484d6a9a7c90f2d7866b6747@1476 e454d3dc-12ff-0310-9b8b-94264392205f

bernardd/yxa,bernardd/yxa,bernardd/yxa,bernardd/yxa