Merge pull request #5889 from owncloud/extstorage-smb-brokenfseek

Fix for smb4php fseek

apps/files_external/3rdparty/smb4php/smb.php

@@ -460,7 +460,8 @@ class smb_stream_wrapper extends smb {
 
 	function stream_tell () { return ftell($this->stream); }
 
-	function stream_seek ($offset, $whence=null) { return fseek($this->stream, $offset, $whence); }
+	// PATCH: the wrapper must return true when fseek succeeded by returning 0.
+	function stream_seek ($offset, $whence=null) { return fseek($this->stream, $offset, $whence) === 0; }
 
 	function stream_flush () {
 		if ($this->mode <> 'r' && $this->need_flush) {