Description:
------------
xmlrpc_decode produces something like:
Array
(
    [50] => 0.29
)

addressing the addressing it like $variable[50] does not 
work :-( (empty result), same with '50' as key.

Reproduce code:
---------------
$response='<?xml version="1.0"?>
<methodResponse>
  <params>
    <param>
      <value>
        <struct>
          <member>
            <name>50</name>
            <value><string>0.29</string></value>
          </member>
        </struct>
      </value>
    </param>
  </params>
</methodResponse>';

$retval_bugged=xmlrpc_decode($response);
print_r($retval_bugged);
/* returns: 
Array
(
    [50] => 0.29
)
*/


Expected result:
----------------
echo $retval_bugged[50];
//should write 0.29

echo $retval_bugged['50'];
//should write 0.29


Actual result:
--------------
echo $retval_bugged[50];
echo $retval_bugged['50'];
//no result


foreach($retval_bugged as $key=>$value) {
  $retval[$key]=$value;
}

echo $retval[50];
//works