[Exist-development] another one test for XPath test case

[Вячеслав С. <sch...@gm...>]

let $errors := <report>
    <status>invalid</status>
    <duration unit="msec">3443</duration>
    <message level="Error" line="1191" column="49" repeat="96"></message>
    <message level="Error" line="161740" column="25"></message>
    <message level="Error" line="162327" column="92" repeat="87"></message>
    <message level="Error" line="255090" column="25">c</message>
    <message level="Error" line="255702" column="414" repeat="9"></message>
</report>
return sum($errors//message/(@repeat/number(),1)[1])

Saxon produce 194
eXistDB - NaN