[Issue 15148] Linker error with packages

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15148

RazvanN <razvan.nitu1305 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |razvan.nitu1305 at gmail.com
         Resolution|---                         |WORKSFORME

--- Comment #3 from RazvanN <razvan.nitu1305 at gmail.com> ---
This now fails with:

```
app.d(5): Error: undefined identifier `a`

```

So it is no longer an error.

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