message: fix ihm model created twice
diff: @@ -231,7 +231,7 @@ async function readIHM(ctx: RuntimeContext, format: mmCIF_Format) {
  };
  const model = createModelIHM(format, data);
  attachProps(model);
  - models.push(createModelIHM(format, data));
  + models.push(model);
  }
  return models;
  