Snippets for perl:net-idn-encode 2.502 from Fedora aarch64

Sourced from https://kojipkgs.fedoraproject.org/packages/perl-Net-IDN-Encode/2.502/1.fc46/data/logs/aarch64/build.log.

• lib/Net/IDN/Punycode.xs:236:36: warning: array subscript has type ‘char’ [-Wchar-subscripts]
    236 |                     dc = dec_digit[*in_p++];                    /* we already know it's in 0..127 */
        |                                    ^~~~~~~
  

• lib/Net/IDN/Punycode.xs:197:38: warning: unused variable ‘len’ [-Wunused-variable]
    197 |                 STRLEN length_guess, len, h, u8;
        |                                      ^~~
  

• lib/Net/IDN/Punycode.xs:192:32: warning: unused variable ‘skip_delta’ [-Wunused-variable]
    192 |                 int delta = 0, skip_delta;
        |                                ^~~~~~~~~~
  

• lib/Net/IDN/Punycode.xs:192:21: warning: unused variable ‘delta’ [-Wunused-variable]
    192 |                 int delta = 0, skip_delta;
        |                     ^~~~~