HOFs declared as global variables in the prolog crash Zorba

[Nicolae Brinza]

E.g., the query below crashes zorba

xquery version "3.0";

declare namespace op = "http://www.zorba-xquery.com/options/features";
declare namespace f = "http://www.zorba-xquery.com/features";

declare option op:enable "f:hof";

declare variable $func := function($x){translate($x, "abcdefghijklmnopqrstuvwxyz", "nopqrstuvwxyzabcdefghijklm")};

declare function local:scramble($x as function(xs:string) as xs:string, $y as xs:string) as xs:string {
  $x($y)
};

local:scramble($func, "john")

[Nicolae Brinza (nbrinza)]

Fixed in the trunk. Test added as hof-104.xq