--special-files deletes already existing special files

Not sure if it is intended but when running sandbox (--run) it deletes special files I created in the directory. This should probably fix it. ``` diff --git a/isolate.c b/isolate.c index 8a685e7..e738fc1 100644 --- a/isolate.c +++ b/isolate.c @@ -1044,7 +1044,7 @@ run(char **argv) close_all_fds(); } - chowntree("box", box_uid, box_gid, false); + chowntree("box", box_uid, box_gid, special_files); cleanup_ownership = 1; setup_pipe(error_pipes, 1); ```