Merge branch 'pullrequests/styleflasher/fixed-garbage-collect'

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;
             }