Fixed iOS build caused by GetThreadList feature.
Fixed iOS build caused by GetThreadList feature.

Summary:
Fixed iOS build caused by GetThreadList feature.

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