Only elide label of hyperlink inset if target and not name given

[Pavel Sanda]

On Mon, Mar 23, 2020 at 05:43:50PM +0100, Kornel Benko wrote:
> I see, unfortunately InsetHyperlink::screenLabel() does not know about buffer.

Anything descending from Inset has access to buffer_. However it's not clear to
me why you want that if you are dealing with window view.

Pavel