Add comment for missing break in switch
Add comment for missing break in switch

For clarity, following other sites, and to silence Coverity.

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