fix bug in cocl_events.cpp so fill_copy_sequence does t at least run now
fix bug in cocl_events.cpp so fill_copy_sequence does t at least run now

hughperkins/cuda-on-cl,hughperkins/coriander,hughperkins/cuda-on-cl,hughperkins/cuda-on-cl,hughperkins/coriander,hughperkins/cuda-on-cl,hughperkins/coriander,hughperkins/coriander