sound-indicator-to-the-left: Only move indicator if favicon is present

[hensm]

Broken when there's no favicon:

[Timvde]

Sorry for taking so long to get back to you.

I get the problem, but isn't the sound icon inconsistently on the right and the left then? I'm not sure if that's any better... Ideally, there would be some room just for the sound icon. Don't you think that's a better solution?

[hensm]

@Timvde Updated