From 21450d4ab2e004570f3be1298f0595d6ff213047 Mon Sep 17 00:00:00 2001
From: Andy Rosslau <mail@andy-rosslau.de>
Date: Fri, 29 Jun 2018 15:31:46 +0200
Subject: [PATCH] directories are skipped while garbage-collecting

A typesafe check is neccessary, otherwise folders with the names "0" or "f" would be skipped as they would be interpreted as false in the while condition.
http://php.net/manual/de/function.readdir.php
---
 GarbageCollect.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/GarbageCollect.php b/GarbageCollect.php
index 548ddfc..d77698d 100644
--- a/GarbageCollect.php
+++ b/GarbageCollect.php
@@ -34,7 +34,7 @@ public static function dropOldFiles($directory, $days = 30, $verbose = false)
             return false;
         }
 
-        while ($file = readdir($dir)) {
+        while (false !== ($file = readdir($dir))) {
             if ($file == '.' || $file == '..') {
                 continue;
             }