[Squash] nit

Co-authored-by: Michaël Zasso <[email protected]>

Author: jasnell

test/parallel/test-abortcontroller.js

@@ -158,8 +158,9 @@ const { ok, strictEqual, throws } = require('assert');
   // Test AbortSignal timeout
   const signal = AbortSignal.timeout(10);
   ok(!signal.aborted);
-  setTimeout(() => {
+  setTimeout(common.mustCall(() => {
     ok(signal.aborted);
+    strictEqual(signal.reason.name, 'TimeoutError');
     strictEqual(signal.reason.code, 23);
-  }, 20);
+  }), 20);
 }