fixup! lint

Author: benjamingr

lib/internal/event_target.js

@@ -447,7 +447,7 @@ function emitUnhandledRejectionOrErr(that, err, event) {
 
 function defineEventHandler(emitter, name) {
   // 8.1.5.1 Event handlers - basically `on[eventName]` attributes
-  let eventHandlerValue = undefined;
+  let eventHandlerValue;
   Object.defineProperty(emitter, `on${name}`, {
     get() {
       return eventHandlerValue;

test/parallel/test-eventtarget.js

@@ -466,7 +466,7 @@ ok(EventTarget);
 {
   const target = new EventTarget();
   defineEventHandler(target, 'foo');
-  let fn = common.mustNotCall(() => count++);
+  const fn = common.mustNotCall();
   target.onfoo = fn;
   strictEqual(target.onfoo, fn);
   target.onfoo = null;