Filter out null characters in groupCharactersByYear()

[luk1337]

AniTrend Pull Request

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Description

This change fixes crash when attempting to view Yui Horie's 2006 anime characters.

Motivation and Context

See description.

How Has This Been Tested?

Open Yui Horie anime roles page, scroll down to 2006.

Screenshots (if appropriate):

n/a

Types of changes

• 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)

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[wax911]

Thank you @luk1337