fix typo in comment and unused variable remove (vercel#45307)

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## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see
[`contributing.md`](https://github.com/vercel/next.js/blob/canary/contributing.md)

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the
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- [ ] Related issues linked using `fixes #number`
- [ ]
[e2e](https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs)
tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have a helpful link attached, see
[`contributing.md`](https://github.com/vercel/next.js/blob/canary/contributing.md)

## Documentation / Examples

- [ ] Make sure the linting passes by running `pnpm build && pnpm lint`
- [ ] The "examples guidelines" are followed from [our contributing
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bench/recursive-copy/run.js

@@ -12,7 +12,7 @@ const createSrcFolder = async () => {
 
   const files = new Array(100)
     .fill(undefined)
-    .map((x, i) =>
+    .map((_, i) =>
       join(srcDir, `folder${i % 5}`, `folder${i + (1 % 5)}`, `file${i}`)
     )
 

scripts/publish-native.js

@@ -70,7 +70,7 @@ const cwd = process.cwd()
         } finally {
           publishSema.release()
         }
-        // lerna publish in next step sill fail if git status is not clean
+        // lerna publish in next step will fail if git status is not clean
         await execa(
           `git`,
           [