Fix race condition caused by using NG_SEND_DATAQ() where we meant to use ng_queue_data().
Fix race condition caused by using NG_SEND_DATAQ() where we meant
to use ng_queue_data().

Reported by:	Udo Erdelhoff <ue@nathan.ruhr.de>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase