fixed nondeterministic dctl error
fixed nondeterministic dctl error

The length of the buffer into which dctl helper functions would write
into was not being set.  This prevents assertions from triggering
somewhat randomly.
cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond