[Pgpool-committers] pgpool - pgpool-II: Prepare for bind_rewrite_timestamp() returns NULL

[User T-ishii]

Log Message:
-----------
Prepare for bind_rewrite_timestamp() returns NULL case. This could
happen if SELECT now() is called inside an aborted transaction.

Fix SimpleForwardToBackend free rewrite_msg too early.

Modified Files:
--------------
    pgpool-II:
        pool_process_query.c (r1.171 -> r1.172)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_query.c?r1=1.171&r2=1.172)