Add missing calls to DatumGetUInt32.
Add missing calls to DatumGetUInt32.

These were inadvertently ommitted from the commit that introduced
abbreviated keys, commit 4ea51cdfe85ceef8afabceb03c446574daa0ac23.

Peter Geoghegan

oberstet/postgres-xl,techdragon/Postgres-XL,zeroae/postgres-xl,lisakowen/gpdb,lisakowen/gpdb,yazun/postgres-xl,greenplum-db/gpdb,50wu/gpdb,pavanvd/postgres-xl,yazun/postgres-xl,yazun/postgres-xl,xinzweb/gpdb,50wu/gpdb,adam8157/gpdb,jmcatamney/gpdb,adam8157/gpdb,zeroae/postgres-xl,yazun/postgres-xl,ashwinstar/gpdb,greenplum-db/gpdb,xinzweb/gpdb,ashwinstar/gpdb,zeroae/postgres-xl,jmcatamney/gpdb,lisakowen/gpdb,jmcatamney/gpdb,lisakowen/gpdb,pavanvd/postgres-xl,Postgres-XL/Postgres-XL,adam8157/gpdb,lisakowen/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,ovr/postgres-xl,jmcatamney/gpdb,oberstet/postgres-xl,adam8157/gpdb,xinzweb/gpdb,adam8157/gpdb,xinzweb/gpdb,jmcatamney/gpdb,50wu/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,lisakowen/gpdb,ovr/postgres-xl,adam8157/gpdb,greenplum-db/gpdb,xinzweb/gpdb,ashwinstar/gpdb,Postgres-XL/Postgres-XL,lisakowen/gpdb,50wu/gpdb,ovr/postgres-xl,techdragon/Postgres-XL,ashwinstar/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,xinzweb/gpdb,ashwinstar/gpdb,yazun/postgres-xl,pavanvd/postgres-xl,techdragon/Postgres-XL,50wu/gpdb,xinzweb/gpdb,ovr/postgres-xl,jmcatamney/gpdb,adam8157/gpdb,50wu/gpdb,pavanvd/postgres-xl,techdragon/Postgres-XL,jmcatamney/gpdb,zeroae/postgres-xl,greenplum-db/gpdb,Postgres-XL/Postgres-XL,greenplum-db/gpdb,Postgres-XL/Postgres-XL,pavanvd/postgres-xl,oberstet/postgres-xl,oberstet/postgres-xl,techdragon/Postgres-XL,50wu/gpdb,xinzweb/gpdb,greenplum-db/gpdb,lisakowen/gpdb,zeroae/postgres-xl,ashwinstar/gpdb,adam8157/gpdb,ovr/postgres-xl,50wu/gpdb,Postgres-XL/Postgres-XL