ZP-556 fixed warning if no importer is available.

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

src/backend/zarafa/importer.php

@@ -107,7 +107,7 @@ class ImportChangesICS implements IImportChanges {
 
             // We throw an general error SYNC_FSSTATUS_CODEUNKNOWN (12) which is also SYNC_STATUS_FOLDERHIERARCHYCHANGED (12)
             // if this happened while doing content sync, the mobile will try to resync the folderhierarchy
-            throw new StatusException(sprintf("ImportChangesICS('%s','%s','%s'): Error, unable to open folder: 0x%X", $session, $store, Utils::PrintAsString($folderid), mapi_last_hresult()), SYNC_FSSTATUS_CODEUNKNOWN);
+            throw new StatusException(sprintf("ImportChangesICS('%s','%s'): Error, unable to open folder: 0x%X", $session, bin2hex($folderid), mapi_last_hresult()), SYNC_FSSTATUS_CODEUNKNOWN);
         }
 
         $this->mapiprovider = new MAPIProvider($this->session, $this->store);