Fix build break because of unsigned/signed mismatch
Fix build break because of unsigned/signed mismatch

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