fixes warning - references
fixes warning - references

UFOMelkor/PhpMetrics,Halleck45/PhpMetrics,phpmetrics/PhpMetrics,UFOMelkor/PhpMetrics,phpmetrics/PhpMetrics,fonsecas72/PhpMetrics,fonsecas72/PhpMetrics,UFOMelkor/PhpMetrics,phpmetrics/PhpMetrics,Halleck45/PhpMetrics