Log Message:
-----------
Remove useless codes to initialize TupleDesc from dblink_exec.
Modified Files:
--------------
pgsql/contrib/dblink:
dblink.c (r1.89 -> r1.90)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/dblink/dblink.c?r1=1.89&r2=1.90)