Merge branch 'PHP-5.5' of git.php.net:php-src into PHP-5.5
fix possible NULL deref
Merge branch 'PHP-5.3' into PHP-5.4

* PHP-5.3:
  fix possible NULL deref
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  fix possible NULL deref
Merge branch 'PHP-5.5'

* PHP-5.5:
  fix possible NULL deref