Fix isNullTranstion which chokes if use ToLower

[kant2002]

Proposed Changes

Fix isNullTranstion which chokes if use ToLower

Types of changes

• Bugfix (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

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• Build and tests pass locally
• I have added tests that prove my fix is effective or that my feature works (if appropriate)
• I have added necessary documentation (if appropriate)

[kant2002]

@simon-reynolds can you take a look at PR?

[kant2002]

@simon-reynolds I did fix formatting. Can you please take a look at PR?

[simon-reynolds]

Hi @kant2002, thank you so much for the PR, merged now
Will try get a release out soon