arg.  ReleaseRef() had two bugs that would hurt / fail retry.  Fixed.
arg.  ReleaseRef() had two bugs that would hurt / fail retry.  Fixed.

basho/leveldb,icholy/leveldb,icholy/leveldb,tempbottle/leveldb-1,icholy/leveldb,tempbottle/leveldb-1,basho/leveldb,tempbottle/leveldb-1,basho/leveldb