fix for recover files in subfolder

apps/files_encryption/lib/util.php

@@ -1406,7 +1406,7 @@ class Util {
 		foreach ($dirContent as $item) {
 			$filePath = substr($item['path'], 25);
 			if ($item['type'] == 'dir') {
-				$this->addRecoveryKey($filePath . '/', $privateKey);
+				$this->recoverAllFiles($filePath . '/', $privateKey);
 			} else {
 				$file = substr($filePath, 0, -4);
 				$this->recoverFile($file, $privateKey);