Put back gistgettuple's check for backwards scan request.
On reflection it's a bad idea for the KNNGIST patch to have removed that.
We don't want it silently returning incorrect answers.
Branch
------
master
Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=04910a3ad5cd2901558da2a4fad9a2e2819348aa
Modified Files
--------------
src/backend/access/gist/gistget.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
