Fix missed message update, per Alvaro Herrera.
Fix missed message update, per Alvaro Herrera.

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