pgsql: On further reflection, we'd better do the same in int.c.

On further reflection, we'd better do the same in int.c.

We previously heard of the same problem in int24div(), so there's not a
good reason to suppose the problem is confined to cases involving int8.

Branch
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REL8_2_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/1b5a7779cbe37a750f799b6314ceb43b8a0e5aba

Modified Files
--------------
src/backend/utils/adt/int.c |   38 ++++++++++++++++++++++++++++++++++++++
1 files changed, 38 insertions(+), 0 deletions(-)