Fix TSAN build error of D36447
Fix TSAN build error of D36447

Summary:
D36447 caused build error when using COMPILE_WITH_TSAN=1.
This diff fixes the error.

Test Plan: jenkins

Reviewers: igor, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D36579

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