From ddf56b84d4d3c36e5a65e202ac4d371957b1bb86 Mon Sep 17 00:00:00 2001
From: Lukas Reschke <lukas@owncloud.com>
Date: Tue, 8 Mar 2016 23:24:44 +0100
Subject: [PATCH] Use "hasKey" instead of checking the value

If the check is negative it would depending on the used cache store the value as an empty string. When reading the value this check would thus return "false" even if a value exists.
---
 apps/files_sharing/lib/external/storage.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/apps/files_sharing/lib/external/storage.php b/apps/files_sharing/lib/external/storage.php
index 87f5a3598fb..80ab006f1ca 100644
--- a/apps/files_sharing/lib/external/storage.php
+++ b/apps/files_sharing/lib/external/storage.php
@@ -253,8 +253,8 @@ class Storage extends DAV implements ISharedStorage {
 	 */
 	private function testRemoteUrl($url) {
 		$cache = $this->memcacheFactory->create('files_sharing_remote_url');
-		if($result = $cache->get($url)) {
-			return (bool)$result;
+		if($cache->hasKey($url)) {
+			return (bool)$cache->get($url);
 		}
 
 		$result = file_get_contents($url);