fix: replaced useless let

[stefano-rainieri]

Bug

• Related issues linked using fixes #number
• Integration tests added
• Errors have helpful link attached, see contributing.md

Feature

• Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
• Related issues linked using fixes #number
• Integration tests added
• Documentation added
• Telemetry added. In case of a feature if it's used or not.
• Errors have helpful link attached, see contributing.md

Documentation / Examples

• Make sure the linting passes by running yarn lint

[ijjk]

Stats from current PR

Default Build (Decrease detected ✓)

General Overall decrease ✓

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
buildDuration	20.7s	20.8s	⚠️ +88ms
buildDurationCached	4.1s	3.9s	-269ms
nodeModulesSize	334 MB	334 MB	-17 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.492	3.854	⚠️ +0.36
/ avg req/sec	715.91	648.72	⚠️ -67.19
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.975	2.157	⚠️ +0.18
/error-in-render avg req/sec	1265.74	1159.03	⚠️ -106.71

Client Bundles (main, webpack, commons)

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28.2 kB	28.2 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	72.1 kB	72.1 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
_app-HASH.js gzip	1.37 kB	1.37 kB	✓
_error-HASH.js gzip	194 B	194 B	✓
amp-HASH.js gzip	312 B	312 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	350 B	350 B	✓
hooks-HASH.js gzip	635 B	635 B	✓
image-HASH.js gzip	4.44 kB	4.44 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	1.87 kB	1.87 kB	✓
routerDirect..HASH.js gzip	321 B	321 B	✓
script-HASH.js gzip	383 B	383 B	✓
withRouter-HASH.js gzip	318 B	318 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	13.3 kB	13.3 kB	✓

Client Build Manifests

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
_buildManifest.js gzip	460 B	460 B	✓
Overall change	460 B	460 B	✓

Rendered Page Sizes

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
index.html gzip	522 B	522 B	✓
link.html gzip	535 B	535 B	✓
withRouter.html gzip	516 B	516 B	✓
Overall change	1.57 kB	1.57 kB	✓

---

Default Build with SWC (Increase detected ⚠️)

General Overall decrease ✓

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
buildDuration	22.6s	22s	-610ms
buildDurationCached	3.9s	4.1s	⚠️ +183ms
nodeModulesSize	334 MB	334 MB	-17 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.738	3.58	-0.16
/ avg req/sec	668.82	698.36	+29.54
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.917	1.94	⚠️ +0.02
/error-in-render avg req/sec	1304.18	1288.62	⚠️ -15.56

Client Bundles (main, webpack, commons)

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.4 kB	28.4 kB	✓
webpack-HASH.js gzip	1.43 kB	1.43 kB	✓
Overall change	72.4 kB	72.4 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	180 B	180 B	✓
amp-HASH.js gzip	305 B	305 B	✓
css-HASH.js gzip	321 B	321 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	342 B	342 B	✓
hooks-HASH.js gzip	622 B	622 B	✓
image-HASH.js gzip	4.46 kB	4.46 kB	✓
index-HASH.js gzip	256 B	256 B	✓
link-HASH.js gzip	1.91 kB	1.91 kB	✓
routerDirect..HASH.js gzip	314 B	314 B	✓
script-HASH.js gzip	375 B	375 B	✓
withRouter-HASH.js gzip	309 B	309 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	13.2 kB	13.2 kB	✓

Client Build Manifests

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	stefano-rainieri/next.js patch-1	Change
index.html gzip	522 B	522 B	✓
link.html gzip	534 B	534 B	✓
withRouter.html gzip	515 B	515 B	✓
Overall change	1.57 kB	1.57 kB	✓

Commit: 8ccc19f