BUG #3738: psql crashes on exit.

The following bug has been logged online:

Bug reference:      3738
Logged by:          Chris Vickery
Email address:      cvickery@gmail.com
PostgreSQL version: 8.2.5
Operating system:   OS X 10.4
Description:        psql crashes on exit.
Details:

senate=# \q
psql(4484) malloc: *** error for object 0x1806200: incorrect checksum for
freed object - object was probably modified after being freed, break at
szone_error to debug
psql(4484) malloc: *** set a breakpoint in szone_error to debug
Segmentation fault

The problem didn't always occur, and I cannot say what caused it to start
happening. But it happens every time now. I have sometimes been running the
current version of pgAdmin3 concurrently with psql, if that's a clue.

The problem started when running 8.2.4, so I backed up the database (using
dumpall from 8.2.4), upgraded to 8.2.5, and restored the database: same
problem. The above output is from the first run of psql after the upgrade; I
have not run pgAdmin3 since the upgrade.

"szone_error" is an OS X library routine, but I'm not enough of an OS X
developer to know how to get at it.