orafce - orafce: Fix out-of-range access in dbms_pipe.db_pipes.

Log Message:
-----------
Fix out-of-range access in dbms_pipe.db_pipes.

Modified Files:
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orafce:
pipe.c (r1.19 -> r1.20)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/pipe.c.diff?r1=1.19&r2=1.20)
orafce/expected:
orafunc.out (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/expected/orafunc.out.diff?r1=1.11&r2=1.12)
orafce/sql:
orafunc.sql (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/orafce/orafce/sql/orafunc.sql.diff?r1=1.11&r2=1.12)