Thread: pgsql: Protect against hypothetical memory leaks inRelationGetPartitio

Protect against hypothetical memory leaks in RelationGetPartitionKey

Also, fix a comment that commit 8a0596cb656e made obsolete.

Reported-by: Robert Haas
Discussion: http://postgr.es/m/CA+TgmoYbpuUUUp2GhYNwWm0qkah39spiU7uOiNXLz20ASfKYoA@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/be2343221fb74bde6b7445feeef32f7ea5cf2618

Modified Files
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src/backend/utils/cache/relcache.c | 53 +++++++++++++++++++++-----------------
src/include/access/hash.h          |  2 +-
2 files changed, 30 insertions(+), 25 deletions(-)