Scrutinizer Auto-Fixes

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/Spomky-Labs/oauth2-server/inspections/e35f6a45-9231-4b50-968e-b148152de0b1

Enabled analysis tools:
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Merge pull request #1 from Spomky/scrutinizer-patch-1

Scrutinizer Auto-Fixes