message: SV: fix type of port is overwriten if not specified
  output [7:0] a;
  output b;
  the type of b was wire[7:0] if specified ANSI style
diff: @@ -149,6 +149,7 @@ pair<unique_ptr<HdlIdDef>, iHdlExprItem*> VerPortParser::visitAnsi_port_declarat
  d = prev_var->direction;
  auto pd = ctx->port_direction();
  if (pd) {
  + prev_var_base_t = nullptr;
  d = visitPort_direction(pd);
  }
  unique_ptr<iHdlExprItem> t = nullptr;
  