Don't trash input list structure in does_not_exist_skipping().

The trigger and rule cases need to split up the input name list, but
they mustn't corrupt the passed-in data structure, since it could be part
of a cached utility-statement parsetree.  Per bug #7641.

Branch
------
REL9_2_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/03787f63921e37c123ceff712ed405c5172e765d

Modified Files
--------------
src/backend/commands/dropcmds.c |    4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

pgsql-committers by date

Next:	From: Tom Lane	Date: 2012-11-08 21:53:00
	Subject: pgsql: Rename ResolveNew() to ReplaceVarsFromTargetList(),and tweak it
Previous:	From: Heikki Linnakangas	Date: 2012-11-08 08:32:13
	Subject: pgsql: Teach pg_basebackup and pg_receivexlog to reply to serverkeepal