leveldb: compaction: Fix table file that not get closed when ongoing compaction interupted by DB.Close
leveldb: compaction: Fix table file that not get closed when ongoing compaction interupted by DB.Close

no2key/goleveldb,conseweb/goleveldb,zzl0/goleveldb,ngaut/goleveldb,FactomProject/goleveldb,rentongzhang/goleveldb,syndtr/goleveldb,hustbill/goleveldb,btcsuite/goleveldb,chai2010/goleveldb,trigrass2/goleveldb