fixed tests for PHP 5.2
fixed tests for PHP 5.2

twigphp/Twig,nicolas-grekas/Twig,gencer/Twig,gencer/Twig,gamernetwork/Twig,nicolas-grekas/Twig,twigphp/Twig,nicolas-grekas/Twig,gamernetwork/Twig,nicolas-grekas/Twig,gamernetwork/Twig,nicolas-grekas/Twig,twigphp/Twig