Re: [Outreachy PATCH v3 1/2] gpg-interface: replace strbuf_split*() with string_list_split*()

> What I was missing was that we use fingerprint[1], not
> fingerprint[0].  So we need to do the strchr() twice, i.e.
>
>      char *begin = fingerprint_stdout.buf;
>      char *delim = strchr(begin, ' ');
>      if (!delim)
>          die_errno("Barf!");
>      begin = delim + 1
>      delim = strchr(begin, ' ');
>      if (!delim)
>          die_errno("Barf!");
>      fingerprint_ret = xmemdupz(begin, end - begin);