[InterNetNews/inn] 014207: lib/hex: Remove unused variable

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 01420710a560c47d18305a3d0515aa9412a52164
      https://github.com/InterNetNews/inn/commit/01420710a560c47d18305a3d0515aa9412a52164
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2024-02-11 (Sun, 11 Feb 2024)

  Changed paths:
    M lib/hex.c

  Log Message:
  -----------
  lib/hex: Remove unused variable

Warning from Clang 17.