moveed parameter checking in sfFunctionCache::call() before ob_start() for better error messages
moveed parameter checking in sfFunctionCache::call() before ob_start() for better error messages

git-svn-id: 7038a89b398528086dab5106cc8d05243a854dbc@7747 ee427ae8-e902-0410-961c-c3ed070cd9f9

WIZARDISHUNGRY/symfony,WIZARDISHUNGRY/symfony,WIZARDISHUNGRY/symfony