[x] 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 not work as expected)
Checklist:
[x] I have read the CONTRIBUTING document.
[x] My code follows the code styleguide of this project.
- My change requires a change to the documentation.- I have updated the documentation accordingly.
…of returning null
Motivation and Context
323
Types of changes
Checklist:
- My change requires a change to the documentation.- I have updated the documentation accordingly.