object: fix attribute comparison

[Thomas Graf]

On Wed, Apr 07, 2010 at 07:15:40PM +0200, Patrick McHardy wrote:

> commit 96315df974731f95698904f655959a9498d6d12e
> Author: Patrick McHardy <kaber at trash.net>
> Date:   Mon Apr 5 15:57:40 2010 +0200
> 
>     object: fix attribute comparison
>     
>     Currently two attributes are regarded as different if they are absent in
>     both objects to be compared. This is obviously incorrect, change to
>     regard objects as different if an attribute is only present on one of
>     them or if the attribute data differs.
>     
>     Signed-off-by: Patrick McHardy <kaber at trash.net>

Applied, thanks Patrick.