fix slight buggette in COCL_DEVICES_ALL
fix slight buggette in COCL_DEVICES_ALL

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