fix OpenAPI schema

httpd/schema/openapi.yaml

@@ -1614,7 +1614,7 @@ components:
           type: boolean
           description: Concurrent reads are safe to use and disabling them will degrade performance. Some servers automatically delete files once they are downloaded. Using concurrent reads is problematic with such servers.
         buffer_size:
-          type: intger
+          type: integer
           description: The size of the buffer (in MB) to use for transfers. By enabling buffering, the reads and writes, from/to the remote SFTP server, are split in multiple concurrent requests and this allows data to be transferred at a faster rate, over high latency networks, by overlapping round-trip times. With buffering enabled, resuming uploads is not supported and a file cannot be opened for both reading and writing at the same time. 0 means disabled.
     FilesystemConfig:
       type: object

vfs/sftpfs.go

@@ -30,6 +30,7 @@ const (
 	sftpFsName = "sftpfs"
 )
 
+// ErrSFTPLoop defines the error to return if an SFTP loop is detected
 var ErrSFTPLoop = errors.New("SFTP loop or nested local SFTP folders detected")
 
 // SFTPFsConfig defines the configuration for SFTP based filesystem