{    The purpose of this request is to disestablish the condition handler in
{ the current procedure block that has been established via the
{ osp$establish_condition_handler or osp$establish_block_exit_hndlr request.
{
{    This procedure assumes that the caller is not an ADA critical frame
{ procedure nor a procedure whose stack frame is a DEBUG critical frame.  This
{ assumption is consistent with the OS use of the procedure.
{
{        OSP$DISESTABLISH_COND_HANDLER;
