message: fix toPy for assign delay specs
diff: @@ -190,7 +190,7 @@ PyObject* ToPy::toPy(const iHdlStatement * o) {
  }
  if (o->exprs.size() > 3) {
  event_delay = PyList_New(o->exprs.size() - 3);
  - for (size_t i = 2; i < o->exprs.size(); i++) {
  + for (size_t i = 3; i < o->exprs.size(); i++) {
  auto py_obj = toPy(o->exprs[i]);
  if (py_obj == nullptr) {
  break;
  