ZP-1186 Folder created under root in Outlook is not synced.

Released under the Affero GNU General Public License (AGPL) version 3.

src/lib/request/folderchange.php

@@ -129,7 +129,7 @@ class FolderChange extends RequestProcessor {
 
             // switch user store if this this happens inside an additional folder
             // if this is an additional folder the backend has to be setup correctly
-            if (!self::$backend->Setup(ZPush::GetAdditionalSyncFolderStore((($parentBackendId !== false)?$parentBackendId:$backendid))))
+            if (!self::$backend->Setup(ZPush::GetAdditionalSyncFolderStore((($parentBackendId != false)?$parentBackendId:$backendid))))
                 throw new StatusException(sprintf("HandleFolderChange() could not Setup() the backend for folder id '%s'", (($parentBackendId !== false)?$parentBackendId:$backendid)), SYNC_FSSTATUS_SERVERERROR);
         }
         catch (StateNotFoundException $snfex) {