fix comment

src/Runner/PHPT/PhptTestCase.php

@@ -486,7 +486,7 @@ private function shouldRunInSubprocess(array $sections, string $cleanCode): bool
         foreach ($sideEffects as $sideEffect) {
             if (
                 $sideEffect === SideEffect::STANDARD_OUTPUT || // stdout is fine, we will catch it using output-buffering
-                $sideEffect === SideEffect::INPUT_OUTPUT // IO is fine while cleanup, as it doesn't pollute the main process
+                $sideEffect === SideEffect::INPUT_OUTPUT // IO is fine, as it doesn't pollute the main process
             ) {
                 continue;
             }

tests/end-to-end/_files/phpt-skipif-require.phpt

@@ -1,5 +1,5 @@
 --TEST--
-PHPT skip condition with IO operations run in main process
+PHPT skip condition with require() runs in subprocess
 --SKIPIF--
 <?php declare(strict_types=1);
 require (__DIR__ . '/phpt-skipif-required-file.php');

tests/end-to-end/_files/phpt-skipif-required-file.php

@@ -1,5 +1,14 @@
-<?php
-
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 namespace PhpTSkipIfRequiredFile;
 
-class SomeClass {}
+class SomeClass
+{
+}