Guard against empty-string results from pg_getlocale.
Guard against empty-string results from pg_getlocale.

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