Description:
------------
The function seems to return a the DB-Object twice. One of the Objects is valid, the other is missing data.

Reproduce code:
---------------
<?php
$xml = '<?xml version="1.0" encoding="UTF-8"?>
	<settings>
        <db>
	<user>root</user>
	<pw>topsecret</pw>
	<host>localhost</host>
	<type>mysql</type>
	<db>mydatabase</db>
	<fetchmode>3</fetchmode>
	<autocommit>on</autocommit>
	</db>
	</settings>';
	$dom = new DomDocument($xml);
	$root = $dom->document_element();
	print '<pre>';
	var_dump($root->get_elements_by_tagname('db'));
	print '</pre>';
?>

Expected result:
----------------
array(1) {
  [0]=>
  object(domelement)#3 (4) {
    ["type"]=>
    int(1)
    ["tagname"]=>
    string(2) "db"
    [0]=>
    int(4)
    [1]=>
    int(22694840)
  }
}
or something similar...

Actual result:
--------------
array(2) {
  [0]=>
  object(domelement)#3 (4) {
    ["type"]=>
    int(1)
    ["tagname"]=>
    string(2) "db"
    [0]=>
    int(4)
    [1]=>
    int(22694840)
  }
  [1]=>
  object(domelement)#4 (4) {
    ["type"]=>
    int(1)
    ["tagname"]=>
    string(2) "db"
    [0]=>
    int(5)
    [1]=>
    int(22693552)
  }
}