message: Initialise unread message count to 0
diff: @@ -209,7 +209,7 @@ private:
  QString m_LogFile;
  QVector<DebugMessage> m_DebugMessages;
  - int m_UnreadMessageCount;
  + int m_UnreadMessageCount = 0;
  bool PassEquivalent(const DrawcallDescription &a, const DrawcallDescription &b);
  bool ContainsMarker(const rdctype::array<DrawcallDescription> &m_Drawcalls);
  