message: Add `environ` extern implementation to freebsd
diff: @@ -442,6 +442,14 @@ impl<'mir, 'tcx> Evaluator<'mir, 'tcx> {
  Self::add_extern_static(this, name, place.ptr);
  }
  }
  + "freebsd" => {
  + // "environ"
  + Self::add_extern_static(
  + this,
  + "environ",
  + this.machine.env_vars.environ.unwrap().ptr,
  + );
  + }
  "windows" => {
  // "_tls_used"
  // This is some obscure hack that is part of the Windows TLS story. It's a `u8`.
  