ls <directory> show bad file size if path is used

If you will try do 'ls pah' it will show bad or ? size of files

```
uPyShell:~/$ ls pubsub
   d/[B] name 
       ? __init__.py
```

```
uPyShell:~/$ cd pubsub
uPyShell:~/pubsub$ ls
   d/[B] name 
    2679 __init__.py
```