Scrutinizer Auto-Fixes

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/elastification/php-client/inspections/eff75df6-7272-4ee0-ac02-ce78bb9f5179

Enabled analysis tools:
 - PHP Analyzer
 - PHP PDepend
 - PHP Similarity Analyzer
 - PHP Change Tracking Analyzer
Merge pull request #6 from elastification/scrutinizer-patch-1

Scrutinizer Auto-Fixes