bug#21955: 25.0.50; vc-next-action fails from *vc-change-log* buffer

[Dmitry Gutov]

On 11/18/2015 08:47 PM, Sven Joachim wrote:
> Visit some file in a git repository, make a change and save it. Press
> C-x v l do view the file's version history.  Press C-x v v to commit
> your changes.  Result is an error:

I'm sure it should work that way. `C-x v v' committing the current file 
is fine, but you've switched to a different buffer. Do we promise the 
behavior you want somewhere in the documentation?

> vc-next-action: Wrong type argument: listp, "/usr/local/src/emacs/"

I can make it fail with a more comprehensible error message.