correct memory leak in flexcache_test (options.filter_policy)
correct memory leak in flexcache_test (options.filter_policy)

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