Remove incorrect comment from GetWriteRecPtr(): the return value is always correct, as described in comments at start of xlog.c
Remove incorrect comment from GetWriteRecPtr(): the return value is always
correct, as described in comments at start of xlog.c

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