Fixed Bug #67538 (SPL Iterators use-after-free)
Fixed bug #67539 (ArrayIterator use-after-free due to object change during sorting)
update NEWS
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  update NEWS
  Fixed bug #67539 (ArrayIterator use-after-free due to object change during sorting)
  Fixed Bug #67538 (SPL Iterators use-after-free)