Check for null in NormalizeAndCleanString.normalizeAndClean

Description

NormalizeAndCleanString.normalizeAndClean doesn't check for null of its input parameter so it caused a scary log message like this

This can be reproduced by having a step which a processor remove an attribute.
This doesn't hurt anything but it may scare user so I think it is better to check for null so that it doesn't cause the error message.

-Binh

Environment

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Status

Assignee

Scott Reisdorf

Reporter

Binh Nguyen

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Fix versions

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Priority

Medium
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