--compress data-duplication bug?

[Chris Dunlop]

Hi,

I just noticed this commit for 3.1:

---
commit cbdff74b44b25ce713739b9c1fb4db67610c675e
Author: Wayne Davison <wayned at samba.org>
Date:   Mon Nov 21 09:13:11 2011 -0800

    Fix --compress data-duplication bug.
---

Is there some reference as to what that is actually fixing, e.g. bug number?

Specifically, I'm wondering if this bug might have caused any corruption in
existing data sets.

Cheers,

Chris