pgsql-server: Avoid crashing when restoring a saved GUC - Mailing list pgsql-committers

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

Modified Files:
--------------
    pgsql-server/src/backend/commands:
        variable.c (r1.98 -> r1.99)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/commands/variable.c.diff?r1=1.98&r2=1.99)
    pgsql-server/src/backend/utils/misc:
        guc.c (r1.230 -> r1.231)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/utils/misc/guc.c.diff?r1=1.230&r2=1.231)