test: fix broken test

Approved for fast-tracking by:
Rich Trott <rtrott@gmail.com>
Colin Ihrig <cjihrig@gmail.com>
Refael Ackermann <refack@gmail.com>
James M Snell <jasnell@gmail.com>
Gireesh Punathil <gpunathi@in.ibm.com>
Anna Henningsen <anna@addaleax.net>
Sakthipriyan Vairamani <thechargingvolcano@gmail.com>

PR-URL: #23232
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>

test/parallel/test-stream-buffer-list.js

@@ -36,5 +36,6 @@ const tmp = util.inspect.defaultOptions.colors;
 util.inspect.defaultOptions = { colors: true };
 assert.strictEqual(
   util.inspect(list),
-  'BufferList { length: \u001b[33m0\u001b[39m }');
+  'BufferList { head: \u001b[1mnull\u001b[22m, tail: \u001b[1mnull\u001b[22m,' +
+  ' length: \u001b[33m0\u001b[39m }');
 util.inspect.defaultOptions = { colors: tmp };