test: wrap countdown callback in common.mustCall

This adds a implicit common.mustCall to the callback provided to
the countdown.

PR-URL: https://github.com/nodejs/node/pull/18506
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/test/parallel/test-timers-socket-timeout-removes-other-socket-unref-timer.js b/test/parallel/test-timers-socket-timeout-removes-other-socket-unref-timer.js
index 842c818070..5dceb386fd 100644
--- a/test/parallel/test-timers-socket-timeout-removes-other-socket-unref-timer.js
+++ b/test/parallel/test-timers-socket-timeout-removes-other-socket-unref-timer.js
@@ -33,7 +33,7 @@ const server = net.createServer(function onClient(client) {
 });
 
 server.listen(0, common.localhostIPv4, common.mustCall(() => {
-  const countdown = new Countdown(2, common.mustCall(() => server.close()));
+  const countdown = new Countdown(2, () => server.close());
 
   {
     const client = net.connect({ port: server.address().port });