BUG OF THE MONTH | Early nullifying

V3080 CWE-476 Possible null dereference. Consider inspecting ‘m_RowRects’. TreeViewControlGUI.cs 272

public override void GetFirstAndLastRowVisible(....)
{
  ....
  if (rowCount != m_RowRects.Count)
  {
    m_RowRects = null;
    throw new InvalidOperationException(string.Format("....",
              rowCount, m_RowRects.Count));
  }
  ....
}

In this case, the exception throw (access by the null reference m_RowRects) will happen when generating the message string for another exception.

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