Update pr-5880.php

Author: staabm

tests/PHPStan/Analyser/data/pr-5880.php

@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php // lint >= 8.0
+
+declare(strict_types = 1);
 
 namespace PR5880EndlessRecursion;