Scrutinizer Auto-Fixes

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/Spomky-Labs/oauth2-server/inspections/51391fbb-6e92-435c-9f2c-6333277c5257

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Merge pull request #5 from Spomky-Labs/scrutinizer-patch-2

Scrutinizer Auto-Fixes