fix wrong __CLASS__ constant
fix wrong __CLASS__ constant

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