Fix build

Author: ondrejmirtes

tests/PHPStan/Rules/Variables/DefinedVariableRuleTest.php

@@ -956,6 +956,10 @@ public function testBug393(): void
 
 	public function testBug9474(): void
 	{
+		if (PHP_VERSION_ID < 80100) {
+			$this->markTestSkipped('Test requires PHP 8.1.');
+		}
+
 		$this->cliArgumentsVariablesRegistered = true;
 		$this->polluteScopeWithLoopInitialAssignments = true;
 		$this->checkMaybeUndefinedVariables = true;

tests/PHPStan/Rules/Variables/data/bug-9474.php

@@ -1,4 +1,4 @@
-<?php
+<?php // lint >= 8.1
 
 namespace Bug9474;