Picked-from: https://github.com/jomat/curlftpfs/commit/b8ce5599a17a1f9e00c93cff3a81fe88f51e8bd3
Upstream-bug: https://sourceforge.net/tracker/?func=detail&aid=2924678&group_id=160565&atid=816357

commit b8ce5599a17a1f9e00c93cff3a81fe88f51e8bd3
Author: jomat <jomat@copete.de>
Date:   Sun Oct 16 18:41:37 2011 +0000

    added patch agains memory leak
    
    see also https://sourceforge.net/tracker/?func=detail&aid=2924678&group_id=160565&atid=816357

diff --git a/ftpfs.c b/ftpfs.c
index 0346354..96146f7 100644
--- a/ftpfs.c
+++ b/ftpfs.c
@@ -615,6 +615,8 @@ static void free_ftpfs_file(struct ftpfs_file *fh) {
   sem_destroy(&fh->data_need);
   sem_destroy(&fh->data_written);
   sem_destroy(&fh->ready);
+  if (fh->buf.size) { buf_free(&fh->buf); }
+  if (fh->stream_buf.size) { buf_free(&fh->stream_buf); }
   free(fh);
 }