From 86886608256f6c480269366f83f83fa97594a5dd Mon Sep 17 00:00:00 2001
From: Robin Appelman <icewind@owncloud.com>
Date: Tue, 7 Apr 2015 16:02:37 +0200
Subject: [PATCH] check that we know the parent

---
 apps/files_sharing/lib/cache.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/apps/files_sharing/lib/cache.php b/apps/files_sharing/lib/cache.php
index 187d3f38afc..2f982ec9dc6 100644
--- a/apps/files_sharing/lib/cache.php
+++ b/apps/files_sharing/lib/cache.php
@@ -415,9 +415,11 @@ class Shared_Cache extends Cache {
 		} else {
 			// bubble up to source cache
 			$sourceCache = $this->getSourceCache($path);
-			$parent = dirname($this->files[$path]);
-			if ($sourceCache) {
-				$sourceCache->correctFolderSize($parent);
+			if (isset($this->files[$path])) {
+				$parent = dirname($this->files[$path]);
+				if ($sourceCache) {
+					$sourceCache->correctFolderSize($parent);
+				}
 			}
 		}
 	}
-- 
2.39.5