Обсуждение: pgsql: Oops, in the previous fix to prevent a cursor that's being used

Log Message:
-----------
Oops, in the previous fix to prevent a cursor that's being used in a FOR
loop from being dropped, I missed subtransaction cleanup. Pinned portals
must be dropped at subtransaction cleanup just as they are at main
transaction cleanup.

Per bug #5556 by Robert Walker. Backpatch to 8.0, 7.4 didn't have
subtransactions.

Tags:
----
REL8_2_STABLE

Modified Files:
--------------
    pgsql/src/backend/utils/mmgr:
        portalmem.c (r1.97.2.3 -> r1.97.2.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mmgr/portalmem.c?r1=1.97.2.3&r2=1.97.2.4)