bug#22825: 25.0.91; 'C-h c' doesn't show echo for prefix keys

[Stefan Monnier]

> To reproduce:
>   emacs -Q
>   C-h c C-x
> The expected result is to show this in the echo area:
>  Describe key (or clock or menu item): C-x-
> But what happens in fact on the current emacs-25 branch is that the
> echo area is cleared, and the cursor is displayed at its beginning.

I believe this is now fixed in emacs-25.


        Stefan