Fix for quite a special case when userland emulates a netgraph node, and
userland can reply to a message with NGM_HASREPLY bit set. In this case
we should not wait for a response to a responce.

PR:		176771
Submitted by:	Keith Reynolds <keith.reynolds tidalscale.com>
Fix spelling.

PR:		176777
Submitted by:	Andrey Simonenko <simon comsys.ntu-kpi.kiev.ua>