Log Message:
-----------
Don't choke when exec_move_row assigns a synthesized null to a column
that happens to be composite itself. Per bug #5314 from Oleg Serov.
Backpatch to 8.0 --- 7.4 has got too many other shortcomings in
composite-type support to make this worth worrying about in that branch.
Modified Files:
--------------
pgsql/src/pl/plpgsql/src:
pl_exec.c (r1.254 -> r1.255)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpgsql/src/pl_exec.c?r1=1.254&r2=1.255)