change to filter_block std::unique_ptr support RAII
change to filter_block std::unique_ptr support RAII

JoeWoo/rocksdb,siddhartharay007/rocksdb,luckywhu/rocksdb,JackLian/rocksdb,OverlordQ/rocksdb,norton/rocksdb,luckywhu/rocksdb,wskplho/rocksdb,amyvmiwei/rocksdb,makelivedotnet/rocksdb,hobinyoon/rocksdb,OverlordQ/rocksdb,Vaisman/rocksdb,mbarbon/rocksdb,skunkwerks/rocksdb,virtdb/rocksdb,IMCG/RcoksDB,wskplho/rocksdb,wlqGit/rocksdb,temicai/rocksdb,wat-ze-hex/rocksdb,wenduo/rocksdb,Andymic/rocksdb,temicai/rocksdb,amyvmiwei/rocksdb,JoeWoo/rocksdb,lgscofield/rocksdb,alihalabyah/rocksdb,JackLian/rocksdb,JohnPJenkins/rocksdb,JackLian/rocksdb,alihalabyah/rocksdb,JoeWoo/rocksdb,wskplho/rocksdb,amyvmiwei/rocksdb,OverlordQ/rocksdb,anagav/rocksdb,facebook/rocksdb,wlqGit/rocksdb,ylong/rocksdb,vashstorm/rocksdb,alihalabyah/rocksdb,vmx/rocksdb,SunguckLee/RocksDB,flabby/rocksdb,virtdb/rocksdb,zhangpng/rocksdb,sorphi/rocksdb,alihalabyah/rocksdb,flabby/rocksdb,vmx/rocksdb,SunguckLee/RocksDB,wlqGit/rocksdb,caijieming-baidu/rocksdb,Applied-Duality/rocksdb,geraldoandradee/rocksdb,hobinyoon/rocksdb,JohnPJenkins/rocksdb,vmx/rocksdb,hobinyoon/rocksdb,kaschaeffer/rocksdb,ylong/rocksdb,ylong/rocksdb,wskplho/rocksdb,makelivedotnet/rocksdb,wat-ze-hex/rocksdb,NickCis/rocksdb,virtdb/rocksdb,jalexanderqed/rocksdb,NickCis/rocksdb,caijieming-baidu/rocksdb,tizzybec/rocksdb,siddhartharay007/rocksdb,Applied-Duality/rocksdb,anagav/rocksdb,skunkwerks/rocksdb,tsheasha/rocksdb,Vaisman/rocksdb,geraldoandradee/rocksdb,OverlordQ/rocksdb,jalexanderqed/rocksdb,makelivedotnet/rocksdb,vashstorm/rocksdb,vashstorm/rocksdb,lgscofield/rocksdb,zhangpng/rocksdb,bbiao/rocksdb,siddhartharay007/rocksdb,IMCG/RcoksDB,RyanTech/rocksdb,jalexanderqed/rocksdb,wat-ze-hex/rocksdb,ylong/rocksdb,amyvmiwei/rocksdb,dkorolev/rocksdb,facebook/rocksdb,skunkwerks/rocksdb,mbarbon/rocksdb,anagav/rocksdb,sorphi/rocksdb,bbiao/rocksdb,tsheasha/rocksdb,Andymic/rocksdb,mbarbon/rocksdb,siddhartharay007/rocksdb,rDSN-Projects/rocksdb.replicated,RyanTech/rocksdb,NickCis/rocksdb,ryneli/rocksdb,anagav/rocksdb,alihalabyah/rocksdb,skunkwerks/rocksdb,anagav/rocksdb,amyvmiwei/rocksdb,biddyweb/rocksdb,tsheasha/rocksdb,luckywhu/rocksdb,facebook/rocksdb,virtdb/rocksdb,jalexanderqed/rocksdb,JoeWoo/rocksdb,luckywhu/rocksdb,Applied-Duality/rocksdb,norton/rocksdb,norton/rocksdb,rDSN-Projects/rocksdb.replicated,tizzybec/rocksdb,tsheasha/rocksdb,mbarbon/rocksdb,virtdb/rocksdb,wskplho/rocksdb,biddyweb/rocksdb,lgscofield/rocksdb,NickCis/rocksdb,makelivedotnet/rocksdb,tsheasha/rocksdb,vashstorm/rocksdb,Andymic/rocksdb,vashstorm/rocksdb,bbiao/rocksdb,OverlordQ/rocksdb,ryneli/rocksdb,wenduo/rocksdb,temicai/rocksdb,lgscofield/rocksdb,sorphi/rocksdb,skunkwerks/rocksdb,ryneli/rocksdb,JoeWoo/rocksdb,NickCis/rocksdb,RyanTech/rocksdb,JoeWoo/rocksdb,fengshao0907/rocksdb,bbiao/rocksdb,amyvmiwei/rocksdb,dkorolev/rocksdb,hobinyoon/rocksdb,flabby/rocksdb,SunguckLee/RocksDB,wlqGit/rocksdb,temicai/rocksdb,RyanTech/rocksdb,Vaisman/rocksdb,vmx/rocksdb,virtdb/rocksdb,sorphi/rocksdb,fengshao0907/rocksdb,temicai/rocksdb,Vaisman/rocksdb,lgscofield/rocksdb,sorphi/rocksdb,dkorolev/rocksdb,wat-ze-hex/rocksdb,kaschaeffer/rocksdb,wenduo/rocksdb,tizzybec/rocksdb,wat-ze-hex/rocksdb,IMCG/RcoksDB,norton/rocksdb,sorphi/rocksdb,tizzybec/rocksdb,makelivedotnet/rocksdb,hobinyoon/rocksdb,fengshao0907/rocksdb,flabby/rocksdb,hobinyoon/rocksdb,fengshao0907/rocksdb,norton/rocksdb,vashstorm/rocksdb,wat-ze-hex/rocksdb,wat-ze-hex/rocksdb,NickCis/rocksdb,dkorolev/rocksdb,rDSN-Projects/rocksdb.replicated,vmx/rocksdb,vmx/rocksdb,caijieming-baidu/rocksdb,lgscofield/rocksdb,kaschaeffer/rocksdb,Vaisman/rocksdb,caijieming-baidu/rocksdb,biddyweb/rocksdb,Applied-Duality/rocksdb,geraldoandradee/rocksdb,rDSN-Projects/rocksdb.replicated,geraldoandradee/rocksdb,temicai/rocksdb,ryneli/rocksdb,NickCis/rocksdb,tizzybec/rocksdb,JohnPJenkins/rocksdb,OverlordQ/rocksdb,skunkwerks/rocksdb,IMCG/RcoksDB,SunguckLee/RocksDB,kaschaeffer/rocksdb,JohnPJenkins/rocksdb,anagav/rocksdb,geraldoandradee/rocksdb,bbiao/rocksdb,Andymic/rocksdb,JackLian/rocksdb,JohnPJenkins/rocksdb,Andymic/rocksdb,fengshao0907/rocksdb,Andymic/rocksdb,flabby/rocksdb,JohnPJenkins/rocksdb,wenduo/rocksdb,siddhartharay007/rocksdb,zhangpng/rocksdb,facebook/rocksdb,temicai/rocksdb,luckywhu/rocksdb,biddyweb/rocksdb,ryneli/rocksdb,JackLian/rocksdb,sorphi/rocksdb,luckywhu/rocksdb,ylong/rocksdb,norton/rocksdb,siddhartharay007/rocksdb,ryneli/rocksdb,biddyweb/rocksdb,dkorolev/rocksdb,wenduo/rocksdb,SunguckLee/RocksDB,hobinyoon/rocksdb,tizzybec/rocksdb,kaschaeffer/rocksdb,luckywhu/rocksdb,rDSN-Projects/rocksdb.replicated,tizzybec/rocksdb,bbiao/rocksdb,IMCG/RcoksDB,vmx/rocksdb,jalexanderqed/rocksdb,Andymic/rocksdb,RyanTech/rocksdb,makelivedotnet/rocksdb,JohnPJenkins/rocksdb,hobinyoon/rocksdb,bbiao/rocksdb,anagav/rocksdb,dkorolev/rocksdb,Andymic/rocksdb,facebook/rocksdb,SunguckLee/RocksDB,SunguckLee/RocksDB,facebook/rocksdb,kaschaeffer/rocksdb,wenduo/rocksdb,virtdb/rocksdb,makelivedotnet/rocksdb,fengshao0907/rocksdb,wlqGit/rocksdb,dkorolev/rocksdb,wenduo/rocksdb,caijieming-baidu/rocksdb,rDSN-Projects/rocksdb.replicated,jalexanderqed/rocksdb,Applied-Duality/rocksdb,rDSN-Projects/rocksdb.replicated,JoeWoo/rocksdb,IMCG/RcoksDB,mbarbon/rocksdb,caijieming-baidu/rocksdb,zhangpng/rocksdb,SunguckLee/RocksDB,lgscofield/rocksdb,fengshao0907/rocksdb,RyanTech/rocksdb,caijieming-baidu/rocksdb,flabby/rocksdb,Applied-Duality/rocksdb,zhangpng/rocksdb,ryneli/rocksdb,norton/rocksdb,tsheasha/rocksdb,Vaisman/rocksdb,norton/rocksdb,ylong/rocksdb,JackLian/rocksdb,skunkwerks/rocksdb,flabby/rocksdb,wenduo/rocksdb,facebook/rocksdb,facebook/rocksdb,zhangpng/rocksdb,Vaisman/rocksdb,biddyweb/rocksdb,siddhartharay007/rocksdb,wskplho/rocksdb,bbiao/rocksdb,biddyweb/rocksdb,wlqGit/rocksdb,Applied-Duality/rocksdb,geraldoandradee/rocksdb,JackLian/rocksdb,kaschaeffer/rocksdb,wskplho/rocksdb,mbarbon/rocksdb,alihalabyah/rocksdb,wat-ze-hex/rocksdb,mbarbon/rocksdb,wlqGit/rocksdb,ylong/rocksdb,tsheasha/rocksdb,alihalabyah/rocksdb,tsheasha/rocksdb,jalexanderqed/rocksdb,IMCG/RcoksDB,OverlordQ/rocksdb,geraldoandradee/rocksdb,RyanTech/rocksdb,zhangpng/rocksdb,vmx/rocksdb,vashstorm/rocksdb,amyvmiwei/rocksdb