remove trailing whitespace

lib/controller/messagescontroller.php

@@ -38,7 +38,7 @@ class MessagesController extends Controller
 	 * @var ContactsIntegration
 	 */
 	private $contactsIntegration;
-	
+
 	/**
 	 * @var \OCA\Mail\Service\Logger
 	 */
@@ -85,7 +85,7 @@ class MessagesController extends Controller
 	 */
 	public function index($from=0, $to=20, $filter = null) {
 		$mailBox = $this->getFolder();
-		
+
 		$folderId = $mailBox->getFolderId();
 		$this->logger->debug("loading messages $from to $to of folder <$folderId>");