Arrary overrun error during gas monitoring

[hooyayou]

Dear Ko,

System Fault occured during monitoring data at gas_data_update() in MainWindow.xaml.c

Please review the issue.

• Code Position error occured.
  if (grid.Items.Count > 0)
  {
  grid.ScrollIntoView(grid.Items[grid.Items.Count - 1]);
  }