Fix DBUS error types to fix AC adapter

[David Zeuthen]

On Mon, 2007-03-26 at 12:53 +0200, Danny Kukawka wrote:
> Ping 
> 
> On Montag, 19. März 2007, Danny Kukawka wrote:
> > Would the attached patch (to avoid call dbus_error_init() again and again)
> > work for you?

It doesn't really do anything apart from making the code harder to read;
e.g. you have to magically know that dbus_error_free() also re-
initializes the error.. dbus_error_init() is fast.

     David