Eliminate a small memory leak introduced by Piraha.
Flesh: Support Darwin 17.5.0
Cactus: Support Darwin 17.6.0
Cactus: Support Darwin 17.7.0
Fix memory leak.
Remove print debug
Flesh: Support Darwin 17.5.0
Cactus: Support Darwin 17.6.0
Cactus: Support Darwin 17.7.0
Fix memory leak.
Remove print debug