json 2.0 bug: array and object closed prematurely in json:parse

the items object and array are closed prematurely when json:parse is called.
Please see added tests:
- json-snelson-parse-array-06
- json-snelson-parse-array-07

For instance the result of test json-snelson-parse-array-06:

import module namespace json = "http://www.zorba-xquery.com/modules/converters/json";

json:parse('[
{
  "firstName": "John",
  "lastName": "Smith",
  "address": {
      "streetAddress": "21 2nd Street",
      "city": "New York",
      "state": "NY",
      "postalCode": 10021
  },
  "phoneNumbers": [
      "212 732-1234",
      "646 123-4567"
  ]
},
{
  "firstName": "John",
  "lastName": "Smith",
  "address": {
      "streetAddress": "21 2nd Street",
      "city": "New York",
      "state": "NY",
      "postalCode": 10021
  },
  "phoneNumbers": [
      "212 732-1234",
      "646 123-4567"
  ]
 }]')

is

<json xmlns="http://john.snelson.org.uk/parsing-json-into-xquery" type="array"><item type="object"></item> [...] </json>

instead of:

<json xmlns="http://john.snelson.org.uk/parsing-json-into-xquery" type="array"><item type="object"> [...] </item> [...] </json>