Add a set of braces to clarify conditional nesting. gcc complained about ambiguities.
Add a set of braces to clarify conditional nesting.
gcc complained about ambiguities.

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