Log Message:
-----------
Remove incorrect (and ill-advised anyway) pfree's in pg_convert_from and
pg_convert_to. Per bug #3866 from Andrew Gilligan.
Modified Files:
--------------
pgsql/src/backend/utils/mb:
mbutils.c (r1.68 -> r1.69)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/mbutils.c?r1=1.68&r2=1.69)