Fixed warning for empty option set

[csjones]

Description

Motivation and Context

How Has This Been Tested?

Checklist:

• I have submitted a CLA form
• If applicable, I have updated the documentation accordingly.
• If applicable, I have added tests to cover my changes.

[CLAassistant]

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1 out of 2 committers have signed the CLA.

✅ dannys42
❌ csjones
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[sonarqubecloud]

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0 Bugs
0 Vulnerabilities
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0.0% Duplication