message: Better reserve of written records size
diff: @@ -1038,7 +1038,7 @@ void ResourceManager<Configuration>::Serialise_InitialContentsNeeded(WriteSerial
  rdcarray<WrittenRecord> WrittenRecords;
  // reasonable estimate, and these records are small
  - WrittenRecords.reserve(m_FrameReferencedResources.size());
  + WrittenRecords.reserve(m_FrameReferencedResources.size() + m_InitialContents.size());
  // all resources that were recorded as being modified should be included in the list of those
  // needing initial contents
  