Tweak new PQExpBufferBroken macro to suppress warnings from pickier versions of gcc.
Tweak new PQExpBufferBroken macro to suppress warnings from pickier
versions of gcc.

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