Bug: if severityLevels is set but "supplemental" is missing

[JannisRln]

Hey ich found a bug.

if severityLevels is set for PCLint but "supplemental" is missing and PClint creates a message with a "supplemental" you get the folloing error "'Cannot read properties of undefined (reading 'toLowerCase')' while validating:...."

This settings are working:

Thos not:

Best Jannis