[packagekit] Dummy backend crash

[Richard Hughes]

On Tue, 2009-01-06 at 11:17 -0500, Trever Fischer wrote:
> This particular crash happens when I'm installing the vips-doc or the UTF8 
> test package. Doing a simple upgrade of everything (or even one at a time) 
> works fine.

Good catch. I've applied the following commit:

commit 548f4327e125483314e5ae94f5daff225af2c396
Author: Richard Hughes <richard at hughsie.com>
Date:   Thu Jan 8 10:49:59 2009 +0000

    bugfix: don't attempt to free the package object twice if we skip it due to duplicate filtering

I'll also backport to stable. Thanks dude.

Richard.