message: Use IntOrUintValue() to read context ids.
diff: @@ -274,13 +274,13 @@ EventNode::EventNode(const XPlaneVisitor* plane, XLine* raw_line,
  producer_type = stat.IntValue();
  break;
  case StatType::kProducerId:
  - producer_id = stat.UintValue();
  + producer_id = stat.IntOrUintValue();
  break;
  case StatType::kConsumerType:
  consumer_type = stat.IntValue();
  break;
  case StatType::kConsumerId:
  - consumer_id = stat.UintValue();
  + consumer_id = stat.IntOrUintValue();
  break;
  case StatType::kIsRoot:
  is_root_ = stat.IntValue();
  