From 6b5daca7b7732edc1a30bcca28827897d9558130 Mon Sep 17 00:00:00 2001
From: Robin Appelman <icewind@owncloud.com>
Date: Wed, 1 Apr 2015 16:12:01 +0200
Subject: [PATCH] check for source cache

---
 apps/files_sharing/lib/cache.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apps/files_sharing/lib/cache.php b/apps/files_sharing/lib/cache.php
index e9b2addea3..187d3f38af 100644
--- a/apps/files_sharing/lib/cache.php
+++ b/apps/files_sharing/lib/cache.php
@@ -416,7 +416,9 @@ class Shared_Cache extends Cache {
 			// bubble up to source cache
 			$sourceCache = $this->getSourceCache($path);
 			$parent = dirname($this->files[$path]);
-			$sourceCache->correctFolderSize($parent);
+			if ($sourceCache) {
+				$sourceCache->correctFolderSize($parent);
+			}
 		}
 	}