{
{    The purpose of this procedure is to deallocate the given active receiver
{ record.  The caller must ensure that there are no channel connections that
{ reference the given active receiver record.
{
{       NLP$UDP_DEALLOCATE_RECEIVER (ACTIVE_RECEIVER)
{
{ ACTIVE_RECEIVER: (input, output)  This parameter contains the pointer to the
{       active receiver record on input.  On output it is set to NIL.
{
