bug#25498: Crash in open-file; patch attached

[Andy Wingo]

On Sat 21 Jan 2017 01:34, Linas Vepstas <linasveps...@gmail.com> writes:

> The following crashes instantly; I used single-quotes by accident.
>
> (open-file "/tmp/lg" 'w')

Fixed with a similar patch.  Thanks :)

Andy