Thread: pgsql: Fix DROP OPERATOR FAMILY IF EXISTS.

Fix DROP OPERATOR FAMILY IF EXISTS.

Essentially, the "IF EXISTS" portion was being ignored, and an error
thrown anyway if the opfamily did not exist.

I broke this in commit fd1843ff8979c0461fb3f1a9eab61140c977e32d; so
backpatch to 9.1.X.

Report and diagnosis by KaiGai Kohei.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/980261929f2b8c40d6be1979ff81c943cad907b3

Modified Files
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src/backend/commands/opclasscmds.c           |    7 +++----
src/test/regress/expected/drop_if_exists.out |    2 +-
2 files changed, 4 insertions(+), 5 deletions(-)