Thread: pgsql: Prevent #option dump from crashing on FORI statement with null

Log Message:
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Prevent #option dump from crashing on FORI statement with null step.  Reported by Pavel.

Modified Files:
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    pgsql/src/pl/plpgsql/src:
        pl_funcs.c (r1.88 -> r1.89)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpgsql/src/pl_funcs.c?r1=1.88&r2=1.89)