Re: remaining sql/json patches

0001: I wonder why you used Node for the ErrorSaveContext pointer
instead of the specific struct you want.  I propose the attached, for
some extra type-safety.  Or did you have a reason to do it that way?

-- 
Álvaro Herrera        Breisgau, Deutschland  —  https://www.EnterpriseDB.com/
"How amazing is that? I call it a night and come back to find that a bug has
been identified and patched while I sleep."                (Robert Davidson)
               http://archives.postgresql.org/pgsql-sql/2006-03/msg00378.php