Fix cache update after uploading the template file (when auto-update is enabled).

If in the process of uploading the template file, a render() is called, the partially uploaded file gets into the cache and after the template file is fully uploaded, the cache is not updated anymore.

lib/Twig/Loader/Filesystem.php

@@ -175,7 +175,7 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderI
 
     public function isFresh($name, $time)
     {
-        return filemtime($this->findTemplate($name)) <= $time;
+        return filemtime($this->findTemplate($name)) < $time;
     }
 
     protected function findTemplate($name)