Check case of re-inserting items that had been previously deleted. Fix some (inconsequential) memory leaks.
Check case of re-inserting items that had been previously deleted.
Fix some (inconsequential) memory leaks.

weidezhang/dht,sit/dht,sit/dht,weidezhang/dht,weidezhang/dht,sit/dht,weidezhang/dht,sit/dht,sit/dht,weidezhang/dht