Merge pull request #9290 from nextcloud/streams-0.6.1

 Use better way to determine stream type in stream wrapper

3rdparty @ d0794726

-Subproject commit d4e8f89af1df2e0b690ce8cae72b63e864472558
+Subproject commit d0794726e2c370c80fbcd29d29b2291fdf9e15f8

lib/private/Files/Stream/Encryption.php

@@ -195,10 +195,10 @@ class Encryption extends Wrapper {
 	protected static function wrapSource($source, $context, $protocol, $class, $mode = 'r+') {
 		try {
 			stream_wrapper_register($protocol, $class);
-			if (@rewinddir($source) === false) {
-				$wrapped = fopen($protocol . '://', $mode, false, $context);
-			} else {
+			if (self::isDirectoryHandle($source)) {
 				$wrapped = opendir($protocol . '://', $context);
+			} else {
+				$wrapped = fopen($protocol . '://', $mode, false, $context);
 			}
 		} catch (\BadMethodCallException $e) {
 			stream_wrapper_unregister($protocol);