Fix typo in typecasting. patch from  ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>
Fix typo in typecasting.
patch from  ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>

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