Log Message:
-----------
Fix seriously nasty memory leak in new TransactionIdIsInProgress code.
Modified Files:
--------------
pgsql-server/src/backend/storage/ipc:
sinval.c (r1.65 -> r1.66)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/storage/ipc/sinval.c.diff?r1=1.65&r2=1.66)