[PATCH] fix abort when selinux denies a message

[Bill Nottingham]

Thiago Macieira (thiago at kde.org) said: 
> On Friday 14 September 2007 21:48:58 Bill Nottingham wrote:
> > AKA "don't pass NULL to dbus_error_is_set".
> >
> > (For any license discussions, this is contributed under 'whatever the
> > license of upstream dbus is, and can be relicensed along with it.')
> 
> Why is error NULL in the first place in that function?

Two of its five callers explicitly set it that way. I'm not against
fixing the callers, I was just taking the path of least resistance.

Bill