Clean up the libraries
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index ec41952..f0eb8bd 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -45,6 +45,8 @@
 
 	/**
 	 * Initialize file-based cache
+	 *
+	 * @return	void
 	 */
 	public function __construct()
 	{