Snippets for httrack 3.49.21 from Alpine s390x

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-s390x/testing/httrack/httrack-3.49.21-r0.log.

• htsselftest.c:4884:16: warning: unused variable 'tlen' [-Wunused-variable]
   4884 |   const size_t tlen = sizeof(cc_text) - 1;
        |                ^~~~