From the commit message:
The event counter was getting corrupted after 2**32-1 events.
How Has This Been Tested?
- Intent of the code is preserved
- Assigning to a variable wide enough not to lose bits
Types of changes
Bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds functionality)
Breaking change (fix or feature that would cause existing functionality to change)
My code follows the code style of this project.
My change requires a change to the documentation.
I have updated the documentation accordingly.
I have read the CONTRIBUTING document.
I have added tests to cover my changes.
All new and existing tests passed.