Description:
------------
APCIterator returns expired items with APC_LIST_ACTIVE and apc.use_request_time disabled

Reproduce code:
---------------
ini_set('apc.use_request_time', 0);

apc_store('key0', 'value0', 100);
apc_store('key1', 'value1', 1);
apc_store('key2', 'value2', 2);

sleep(2);

$it = new APCIterator('user', '/key./', APC_ITER_DTIME, 1, APC_LIST_ACTIVE);
var_dump( iterator_to_array($it) );

Expected result:
----------------
array(1) {
  ["key0"]=>
  array(1) {
    ["deletion_time"]=>
    int(0)
  }
}

Actual result:
--------------
array(3) {
  ["key0"]=>
  array(1) {
    ["deletion_time"]=>
    int(0)
  }
  ["key1"]=>
  array(1) {
    ["deletion_time"]=>
    int(0)
  }
  ["key2"]=>
  array(1) {
    ["deletion_time"]=>
    int(0)
  }
}