Fix compile warning
Fix compile warning

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