bug#48408: BUGFIX: window-default-font-height: check for nil string

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

>> This patch does do the job; The bug does not happen with this patch.
>
> Thanks, installed.

Skimming this bug report, it seems like the reported issue here was
fixed, so I'm closing it.  There were alternative patches discussed, but
they were then discarded, I think?  If there's more to be done here,
please respond to the debbugs address and we'll reopen.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no