pgsql: Make duplicate_oids return nonzero exit status if duplicates wer

Make duplicate_oids return nonzero exit status if duplicates were found

Automatic detection of errors is easier that way.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/aa6fdd186cf2c29e04d3cc8ca19783fb904a5a33

Modified Files
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src/include/catalog/duplicate_oids |    7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)