Thread: pgsql: Remove incorrect (and ill-advised anyway) pfree's in

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)