Minz slight change in session cookie path

https://github.com/FreshRSS/FreshRSS/issues/924#issuecomment-126499403

lib/Minz/Session.php

@@ -66,7 +66,10 @@ class Minz_Session {
 	 */
 	public static function keepCookie($l) {
 			// Get the script_name (e.g. /p/i/index.php) and keep only the path.
-			$cookie_dir = dirname(empty($_SERVER['REQUEST_URI']) ? '/' : dirname($_SERVER['REQUEST_URI']));
+			$cookie_dir = empty($_SERVER['REQUEST_URI']) ? '/' : $_SERVER['REQUEST_URI'];
+			if (substr($cookie_dir, -1) !== '/') {
+				$cookie_dir = dirname($cookie_dir) . '/';
+			}
 			session_set_cookie_params($l, $cookie_dir, '', false, false);
 	}