Log Message:
-----------
Avoid crashing when restoring a saved GUC session_authorization value
that refers to a now-deleted userid.  Per gripe from Chris Ochs.

Tags:
----
REL7_4_STABLE

Modified Files:
--------------
    pgsql-server/src/backend/commands:
        variable.c (r1.88 -> r1.88.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/commands/variable.c.diff?r1=1.88&r2=1.88.2.1)
    pgsql-server/src/backend/utils/misc:
        guc.c (r1.164.2.2 -> r1.164.2.3)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/utils/misc/guc.c.diff?r1=1.164.2.2&r2=1.164.2.3)

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Next:	From: Tom Lane	Date: 2004-08-11 22:50:46
	Subject: pgsql-server: Fix broken parsing of CREATE TABLE AS (looks like a
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	Subject: pgsql-server: Avoid crashing when restoring a saved GUC