Fix the valgrind error in newly added unittests for table stats
Fix the valgrind error in newly added unittests for table stats

Summary:

Previous the newly added test called NewBloomFilter without releasing it at the end of the test, which resulted in memory leak and was detected by valgrind.

Test Plan:

Ran valgrind test.

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