Fix core dump recently introduced into pgbench.
Fix core dump recently introduced into pgbench.

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