Fix compile warning.
Fix compile warning.

jmcatamney/gpdb,CraigHarris/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,Chibin/gpdb,chrishajas/gpdb,Postgres-XL/Postgres-XL,edespino/gpdb,atris/gpdb,CraigHarris/gpdb,arcivanov/postgres-xl,jmcatamney/gpdb,zaksoup/gpdb,xuegang/gpdb,Chibin/gpdb,janebeckman/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,kmjungersen/PostgresXL,ovr/postgres-xl,janebeckman/gpdb,adam8157/gpdb,lintzc/gpdb,foyzur/gpdb,foyzur/gpdb,cjcjameson/gpdb,lpetrov-pivotal/gpdb,ahachete/gpdb,lisakowen/gpdb,royc1/gpdb,rubikloud/gpdb,ovr/postgres-xl,greenplum-db/gpdb,foyzur/gpdb,yazun/postgres-xl,Chibin/gpdb,CraigHarris/gpdb,Postgres-XL/Postgres-XL,kaknikhil/gpdb,kmjungersen/PostgresXL,janebeckman/gpdb,randomtask1155/gpdb,pavanvd/postgres-xl,zaksoup/gpdb,CraigHarris/gpdb,atris/gpdb,adam8157/gpdb,adam8157/gpdb,xinzweb/gpdb,ashwinstar/gpdb,tangp3/gpdb,tangp3/gpdb,tangp3/gpdb,kmjungersen/PostgresXL,zeroae/postgres-xl,zeroae/postgres-xl,pavanvd/postgres-xl,atris/gpdb,zeroae/postgres-xl,Chibin/gpdb,oberstet/postgres-xl,cjcjameson/gpdb,lintzc/gpdb,tangp3/gpdb,janebeckman/gpdb,greenplum-db/gpdb,lintzc/gpdb,kaknikhil/gpdb,kaknikhil/gpdb,kmjungersen/PostgresXL,edespino/gpdb,chrishajas/gpdb,chrishajas/gpdb,randomtask1155/gpdb,edespino/gpdb,Chibin/gpdb,postmind-net/postgres-xl,0x0FFF/gpdb,ahachete/gpdb,CraigHarris/gpdb,kaknikhil/gpdb,xinzweb/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,adam8157/gpdb,rvs/gpdb,tpostgres-projects/tPostgres,tpostgres-projects/tPostgres,0x0FFF/gpdb,pavanvd/postgres-xl,yuanzhao/gpdb,Chibin/gpdb,atris/gpdb,lintzc/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,techdragon/Postgres-XL,arcivanov/postgres-xl,xinzweb/gpdb,xinzweb/gpdb,zaksoup/gpdb,chrishajas/gpdb,cjcjameson/gpdb,royc1/gpdb,randomtask1155/gpdb,Quikling/gpdb,rubikloud/gpdb,edespino/gpdb,atris/gpdb,edespino/gpdb,atris/gpdb,Postgres-XL/Postgres-XL,royc1/gpdb,kaknikhil/gpdb,CraigHarris/gpdb,postmind-net/postgres-xl,cjcjameson/gpdb,50wu/gpdb,Chibin/gpdb,tangp3/gpdb,janebeckman/gpdb,oberstet/postgres-xl,rubikloud/gpdb,royc1/gpdb,jmcatamney/gpdb,lisakowen/gpdb,oberstet/postgres-xl,0x0FFF/gpdb,janebeckman/gpdb,yuanzhao/gpdb,foyzur/gpdb,techdragon/Postgres-XL,atris/gpdb,chrishajas/gpdb,lisakowen/gpdb,royc1/gpdb,foyzur/gpdb,randomtask1155/gpdb,Quikling/gpdb,Quikling/gpdb,jmcatamney/gpdb,0x0FFF/gpdb,xinzweb/gpdb,ashwinstar/gpdb,lpetrov-pivotal/gpdb,Chibin/gpdb,greenplum-db/gpdb,50wu/gpdb,0x0FFF/gpdb,xuegang/gpdb,arcivanov/postgres-xl,foyzur/gpdb,adam8157/gpdb,rvs/gpdb,zaksoup/gpdb,ashwinstar/gpdb,ovr/postgres-xl,CraigHarris/gpdb,foyzur/gpdb,rvs/gpdb,snaga/postgres-xl,adam8157/gpdb,cjcjameson/gpdb,randomtask1155/gpdb,lintzc/gpdb,Chibin/gpdb,lintzc/gpdb,yazun/postgres-xl,50wu/gpdb,techdragon/Postgres-XL,rubikloud/gpdb,kaknikhil/gpdb,0x0FFF/gpdb,randomtask1155/gpdb,kaknikhil/gpdb,zaksoup/gpdb,lpetrov-pivotal/gpdb,xuegang/gpdb,postmind-net/postgres-xl,randomtask1155/gpdb,Quikling/gpdb,50wu/gpdb,chrishajas/gpdb,royc1/gpdb,snaga/postgres-xl,rvs/gpdb,Quikling/gpdb,arcivanov/postgres-xl,ahachete/gpdb,0x0FFF/gpdb,50wu/gpdb,rvs/gpdb,yuanzhao/gpdb,chrishajas/gpdb,cjcjameson/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,kaknikhil/gpdb,lintzc/gpdb,foyzur/gpdb,xinzweb/gpdb,xinzweb/gpdb,royc1/gpdb,lisakowen/gpdb,janebeckman/gpdb,techdragon/Postgres-XL,edespino/gpdb,rubikloud/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,ahachete/gpdb,oberstet/postgres-xl,zaksoup/gpdb,postmind-net/postgres-xl,lpetrov-pivotal/gpdb,tpostgres-projects/tPostgres,lintzc/gpdb,yazun/postgres-xl,royc1/gpdb,rubikloud/gpdb,kaknikhil/gpdb,lisakowen/gpdb,oberstet/postgres-xl,janebeckman/gpdb,rvs/gpdb,rvs/gpdb,xuegang/gpdb,snaga/postgres-xl,50wu/gpdb,lpetrov-pivotal/gpdb,zeroae/postgres-xl,janebeckman/gpdb,chrishajas/gpdb,lpetrov-pivotal/gpdb,yuanzhao/gpdb,Postgres-XL/Postgres-XL,Quikling/gpdb,ashwinstar/gpdb,lpetrov-pivotal/gpdb,tangp3/gpdb,janebeckman/gpdb,ovr/postgres-xl,50wu/gpdb,xuegang/gpdb,arcivanov/postgres-xl,lpetrov-pivotal/gpdb,ashwinstar/gpdb,yazun/postgres-xl,ashwinstar/gpdb,CraigHarris/gpdb,lintzc/gpdb,xuegang/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,ovr/postgres-xl,tpostgres-projects/tPostgres,xinzweb/gpdb,adam8157/gpdb,edespino/gpdb,ahachete/gpdb,ahachete/gpdb,adam8157/gpdb,50wu/gpdb,Postgres-XL/Postgres-XL,cjcjameson/gpdb,greenplum-db/gpdb,lisakowen/gpdb,zaksoup/gpdb,rubikloud/gpdb,pavanvd/postgres-xl,postmind-net/postgres-xl,Chibin/gpdb,snaga/postgres-xl,rvs/gpdb,0x0FFF/gpdb,ahachete/gpdb,cjcjameson/gpdb,greenplum-db/gpdb,CraigHarris/gpdb,ahachete/gpdb,xuegang/gpdb,greenplum-db/gpdb,zeroae/postgres-xl,tangp3/gpdb,pavanvd/postgres-xl,snaga/postgres-xl,Quikling/gpdb,rvs/gpdb,xuegang/gpdb,tpostgres-projects/tPostgres,atris/gpdb,ashwinstar/gpdb,Quikling/gpdb,jmcatamney/gpdb,tangp3/gpdb,xuegang/gpdb,zaksoup/gpdb,lisakowen/gpdb,lisakowen/gpdb,randomtask1155/gpdb,Quikling/gpdb,arcivanov/postgres-xl,Quikling/gpdb,edespino/gpdb,edespino/gpdb,yazun/postgres-xl,edespino/gpdb,cjcjameson/gpdb,rubikloud/gpdb,kmjungersen/PostgresXL,rvs/gpdb,techdragon/Postgres-XL