Tweak new error message to conform to style guidelines.
Tweak new error message to conform to style guidelines.

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