[Pgpool-committers] pgpool - pgpool-II: Fix reset_backend.

[User T-ishii]

Log Message:
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Fix reset_backend. Check if backend is valid.

Modified Files:
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    pgpool-II:
        pool_process_query.c (r1.228 -> r1.229)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_query.c?r1=1.228&r2=1.229)