[Squash] nit

Co-authored-by: Michaël Zasso <targos@protonmail.com>

test/parallel/test-requestanimationframe.js

@@ -3,6 +3,12 @@
 const common = require('../common');
 const { strictEqual } = require('assert');
 
+let called = false;
+
 requestAnimationFrame(common.mustCall((ts) => {
+ called = true;
  strictEqual(typeof ts, 'number');
 }));
+
+// Make sure the callback is called asynchronously.
+strictEqual(called, false);