test: handle (almost) all nits in #19212

Refs: #19212
Refs: Refs: #19105

test/parallel/test-cluster-kill-disconnect.js

@@ -4,6 +4,7 @@ const common = require('../common');
 // Check that cluster works perfectly for both `kill` and `disconnect` cases.
 // Also take into account that the `disconnect` event may be received after the
 // `exit` event.
+// https://github.com/nodejs/node/issues/3238
 
 const assert = require('assert');
 const cluster = require('cluster');

test/parallel/test-fs-readfilesync-enoent.js

@@ -1,19 +1,18 @@
 'use strict';
 const common = require('../common');
 
+// This test is only relevant on Windows.
+if (!common.isWindows)
+  common.skip('Windows specific test.');
+
 // This test ensures fs.realpathSync works on properly on Windows without
 // throwing ENOENT when the path involves a fileserver
 // https://github.com/nodejs/node-v0.x-archive/issues/3542
 
-// This test is only relevant on Windows.
-
 const assert = require('assert');
 const fs = require('fs');
 const path = require('path');
 
-if (!common.isWindows)
-  common.skip('Windows specific test.');
-
 function test(p) {
   const result = fs.realpathSync(p);
   assert.strictEqual(result.toLowerCase(), path.resolve(p).toLowerCase());