From a0854a0b544816f2b70830efb01fbcf825e7c5f9 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Tue, 21 Aug 2012 16:30:37 +0200
Subject: [PATCH] Fixed broken WCFSetup

---
 .../builder/UserGroupPermissionCacheBuilder.class.php     | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/lib/system/cache/builder/UserGroupPermissionCacheBuilder.class.php b/wcfsetup/install/files/lib/system/cache/builder/UserGroupPermissionCacheBuilder.class.php
index 5363177a4c..e0ce079f63 100644
--- a/wcfsetup/install/files/lib/system/cache/builder/UserGroupPermissionCacheBuilder.class.php
+++ b/wcfsetup/install/files/lib/system/cache/builder/UserGroupPermissionCacheBuilder.class.php
@@ -83,7 +83,13 @@ class UserGroupPermissionCacheBuilder implements ICacheBuilder {
 				}
 				else {
 					$typeObj = $this->getTypeObject($option['type']);
-					$result = $typeObj->merge($option['values']);
+					$result = array_shift($option['values']);
+					foreach ($option['values'] as $value) {
+						$newValue = $typeObj->merge($result, $value);
+						if ($newValue !== null) {
+							$result = $newValue;
+						}
+					}
 				}
 				
 				// unset false values
-- 
2.20.1