BUG #2494: SCROLL CURSOR does not worl

The following bug has been logged online:

Bug reference: 2494
Logged by: Michal Szymanski
Email address: biuro(at)globeinphotos(dot)com
PostgreSQL version: 8.1
Operating system: Windows
Description: SCROLL CURSOR does not worl
Details:

Function with scroll cursor cannot be compiled.
ERROR: syntax error at or near "CURSOR"
CONTEXT: invalid type name "SCROLL CURSOR FOR SELECT * FROM freeconet.alias
WHERE mask >"
compile of PL/pgSQL function "dummy" near line 3

Function that I want compile.
CREATE OR REPLACE FUNCTION freeconet.dummy (
) RETURNS INT8 AS $$
DECLARE
rowvar freeconet.ALIAS%ROWTYPE;
DECLARE curs1 SCROLL CURSOR FOR SELECT * FROM freeconet.alias WHERE
mask>='+4850X' LIMIT 100 ;
BEGIN
BEGIN

OPEN curs1;
FETCH curs1 INTO rowvar;

EXCEPTION
WHEN OTHERS THEN
RAISE WARNING '.... Kod bledu = %', SQLSTATE;
RETURN -1; /* blad danych */
END;
RAISE WARNING ' mask=%',rowvar.mask;
RETURN 1;
END;
$$ LANGUAGE 'plpgsql' VOLATILE;