bug#58312: Improve “Invalid face attribute” error message

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Felix Dietrich <felix.dietrich@sperrhaken.name> writes:
>
>> Could the log message “Invalid face attribute” created by
>> “xfaces.c:merge_face_ref” be extended to also include the buffer or
>> other identifying information about its origin?
>
> Perhaps include the window name?  That would be less ambiguous than the
> buffer name.

That makes sense to me.  Eli or Po Lu, WDYT about this change?