Don't leak the temporary PLyProcedure struct we create for inline plpython blocks.
Don't leak the temporary PLyProcedure struct we create for inline plpython
blocks.

Investigation by Jan Urbański, though I didn't use his patch.

yazun/postgres-xl,adam8157/gpdb,jmcatamney/gpdb,xinzweb/gpdb,Postgres-XL/Postgres-XL,zeroae/postgres-xl,pavanvd/postgres-xl,Postgres-XL/Postgres-XL,snaga/postgres-xl,greenplum-db/gpdb,ovr/postgres-xl,50wu/gpdb,oberstet/postgres-xl,techdragon/Postgres-XL,xinzweb/gpdb,adam8157/gpdb,techdragon/Postgres-XL,adam8157/gpdb,lisakowen/gpdb,xinzweb/gpdb,tpostgres-projects/tPostgres,greenplum-db/gpdb,lisakowen/gpdb,lisakowen/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,greenplum-db/gpdb,arcivanov/postgres-xl,xinzweb/gpdb,ovr/postgres-xl,yazun/postgres-xl,techdragon/Postgres-XL,arcivanov/postgres-xl,adam8157/gpdb,ashwinstar/gpdb,lisakowen/gpdb,tpostgres-projects/tPostgres,snaga/postgres-xl,ashwinstar/gpdb,greenplum-db/gpdb,jmcatamney/gpdb,lisakowen/gpdb,jmcatamney/gpdb,snaga/postgres-xl,lisakowen/gpdb,kmjungersen/PostgresXL,arcivanov/postgres-xl,50wu/gpdb,adam8157/gpdb,zeroae/postgres-xl,greenplum-db/gpdb,Postgres-XL/Postgres-XL,lisakowen/gpdb,kmjungersen/PostgresXL,oberstet/postgres-xl,jmcatamney/gpdb,50wu/gpdb,ashwinstar/gpdb,snaga/postgres-xl,yazun/postgres-xl,greenplum-db/gpdb,lisakowen/gpdb,Postgres-XL/Postgres-XL,ashwinstar/gpdb,50wu/gpdb,techdragon/Postgres-XL,ovr/postgres-xl,ashwinstar/gpdb,postmind-net/postgres-xl,pavanvd/postgres-xl,techdragon/Postgres-XL,pavanvd/postgres-xl,arcivanov/postgres-xl,pavanvd/postgres-xl,oberstet/postgres-xl,adam8157/gpdb,xinzweb/gpdb,adam8157/gpdb,ovr/postgres-xl,oberstet/postgres-xl,adam8157/gpdb,jmcatamney/gpdb,snaga/postgres-xl,xinzweb/gpdb,kmjungersen/PostgresXL,tpostgres-projects/tPostgres,tpostgres-projects/tPostgres,arcivanov/postgres-xl,arcivanov/postgres-xl,50wu/gpdb,postmind-net/postgres-xl,ovr/postgres-xl,zeroae/postgres-xl,postmind-net/postgres-xl,kmjungersen/PostgresXL,Postgres-XL/Postgres-XL,yazun/postgres-xl,postmind-net/postgres-xl,jmcatamney/gpdb,50wu/gpdb,tpostgres-projects/tPostgres,50wu/gpdb,kmjungersen/PostgresXL,zeroae/postgres-xl,postmind-net/postgres-xl,zeroae/postgres-xl,xinzweb/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,50wu/gpdb,jmcatamney/gpdb,xinzweb/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,yazun/postgres-xl,pavanvd/postgres-xl,greenplum-db/gpdb