Log Message:
-----------
When LockAcquire fails at the stage of creating a proclock object, be
sure to clean up the already-created lock object, if it has no other
references. Avoids possibly-permanent leak of shared memory.
Modified Files:
--------------
pgsql-server/src/backend/storage/lmgr:
lock.c (r1.139 -> r1.140)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/storage/lmgr/lock.c.diff?r1=1.139&r2=1.140)