stream: do cleanup when iterator is destroyed

[KhooHaoYit]

When you create a readable.iterator from a stream with options.destroyOnReturn on false, the iterator doesn't do any cleanup when the iterator exits, causing it to add multiple listeners to the stream

Code that reproduces the bug

const pass = new stream.PassThrough().end();
for(let amount = 15; amount; --amount){
  for await (const chunk of pass.iterator({ destroyOnReturn: false })){}
}

Console output

(node:20524) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 readable listeners added to [PassThrough]. Use emitter.setMaxListeners() to increase limit
(Use `node --trace-warnings ...` to show where the warning was created)
(node:20524) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 end listeners added to [PassThrough]. Use emitter.setMaxListeners() to increase limit
(node:20524) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 finish listeners added to [PassThrough]. Use emitter.setMaxListeners() to increase limit
(node:20524) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 error listeners added to [PassThrough]. Use emitter.setMaxListeners() to increase limit
(node:20524) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 close listeners added to [PassThrough]. Use emitter.setMaxListeners() to increase limit

Tested node version

v17.6.0 on Windows 10 and v18.0.0-pre @ b481beecd8

[nodejs-github-bot]

Review requested:

• @nodejs/streams

[mcollina]

Can you please add a unit test?

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/42978/

[benjamingr]

@Linkgoron

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/43020/

[mcollina]

lgtm

[nodejs-github-bot]

Commit Queue failed

- Loading data for nodejs/node/pull/42320
✔  Done loading data for nodejs/node/pull/42320
----------------------------------- PR info ------------------------------------
Title      stream: do cleanup when iterator is destroyed (#42320)
   ⚠  Could not retrieve the email or name of the PR author's from user's GitHub profile!
Branch     KhooHaoYit:stream-iterator-fix -> nodejs:master
Labels     stream, commit-queue-squash
Commits    3
 - stream: do cleanup when iterator is destroyed
 - test: check for dangling listeners
 - test: enable no-unused-vars ESLint rule
Committers 1
 - Khoo Hao Yit <[email protected]>
PR-URL: https://github.com/nodejs/node/pull/42320
Reviewed-By: Robert Nagy 
Reviewed-By: Matteo Collina 
Reviewed-By: Nitzan Uziely 
Reviewed-By: Benjamin Gruenbaum 
Reviewed-By: James M Snell 
------------------------------ Generated metadata ------------------------------
PR-URL: https://github.com/nodejs/node/pull/42320
Reviewed-By: Robert Nagy 
Reviewed-By: Matteo Collina 
Reviewed-By: Nitzan Uziely 
Reviewed-By: Benjamin Gruenbaum 
Reviewed-By: James M Snell 
--------------------------------------------------------------------------------
   ℹ  This PR was created on Sun, 13 Mar 2022 11:59:44 GMT
   ✔  Approvals: 5
   ✔  - Robert Nagy (@ronag) (TSC): https://github.com/nodejs/node/pull/42320#pullrequestreview-908129087
   ✔  - Matteo Collina (@mcollina) (TSC): https://github.com/nodejs/node/pull/42320#pullrequestreview-910068802
   ✔  - Nitzan Uziely (@linkgoron): https://github.com/nodejs/node/pull/42320#pullrequestreview-908140795
   ✔  - Benjamin Gruenbaum (@benjamingr): https://github.com/nodejs/node/pull/42320#pullrequestreview-908141108
   ✔  - James M Snell (@jasnell) (TSC): https://github.com/nodejs/node/pull/42320#pullrequestreview-908891052
   ✖  This PR needs to wait 15 more minutes to land
   ✔  Last GitHub CI successful
   ℹ  Last Full PR CI on 2022-03-14T17:01:15Z: https://ci.nodejs.org/job/node-test-pull-request/43020/
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[nodejs-github-bot]

Landed in 6d3920d