bug#35785: guix won't download if locale is set to swedish

[Einar Largenius]

Hello.

I just downloaded guix and installed it. In my config I have this line:

    (locale "sv_SE.utf8")

If I run 'guix pull' I get the error:

    guix pull: error: lstat: Filen eller katalogen finns inte: 
"ftp://sourceware.org/pub/libffi-3.2.1.tar.gz";

The part in swedish means "file or directory does not exist".

'LANG= guix pull' works without issue.