SIGABRT with pt_BR locale

[René Neumann]

Hi *,

as reported on Reddit [1], there is an issue with the pt_BR translation 
of texinfo that leads to an abort.

One function name is replaced with a typo in the translation:
[get-inffo-help-node]

This was introduced with commit 158af73a3e on Feb 10, 2021.

a) Could you fix this typo? I could also provide a patch, but then I 
need to figure out `git send-mail` :)

b) I suggest printing out an error message instead of (or in addition 
to) a full abort. As one can see in the reddit, it leaves the user 
puzzled and needs installation of debug symbols to figure out the reason.

Thanks a lot,
René

P.S.: I'm not subscribed to the list, please include me in replies :)

[1] 
https://www.reddit.com/r/archlinux/comments/ophu9k/texinfo_not_working_sigabrt_core_dumped/