Merge branch 'bugreportuser-fix-file-exists-on-non-file'

Author: sebastianbergmann

src/Filter.php

@@ -102,7 +102,8 @@ public function isFile(string $filename): bool
             \strpos($filename, 'runtime-created function') !== false ||
             \strpos($filename, 'runkit created function') !== false ||
             \strpos($filename, 'assert code') !== false ||
-            \strpos($filename, 'regexp code') !== false) {
+            \strpos($filename, 'regexp code') !== false ||
+            \strpos($filename, 'Standard input code') !== false) {
             $isFile = false;
         } else {
             $isFile = \file_exists($filename);