IN  tDEVICECONTEXT  *pDeviceContext,
  IN  PCTE_IRP        pIrp

Routine Description:

    This function takes the rcv irp posted by WINS and decides if there are
    any datagram queued waiting to go up to WINS.  If so then the datagram
    is copied to the WINS buffer and passed back up.  Otherwise the irp is
    held by Netbt until a datagram does come in.


    pDeviceContext  - not used
    pIrp            - Wins Rcv Irp

Return Value:

    STATUS_PENDING if the buffer is to be held on to , the normal case.