Remove an unnecessary mut in BufWriter::into_parts.

[gwy15]

ptr::read takes *const T so &mut is not necessary.

[rustbot]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @joshtriplett (or someone else) soon.

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[rustbot]

Hey! It looks like you've submitted a new PR for the library teams!

If this PR contains changes to any rust-lang/rust public library APIs then please comment with @rustbot label +T-libs-api -T-libs to tag it appropriately. If this PR contains changes to any unstable APIs please edit the PR description to add a link to the relevant API Change Proposal or create one if you haven't already. If you're unsure where your change falls no worries, just leave it as is and the reviewer will take a look and make a decision to forward on if necessary.

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• Changing public documentation in ways that create new stability guarantees
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[allexwentworthok]

looks, very well

[jyn514]

@bors r+

[bors]

📌 Commit 9169107 has been approved by jyn514

It is now in the queue for this repository.

[bors]

⌛ Testing commit 9169107 with merge 97879ce...

[bors]

☀️ Test successful - checks-actions
Approved by: jyn514
Pushing 97879ce to master...

[rust-timer]

Finished benchmarking commit (97879ce): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	7.7%	[7.7%, 7.7%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.7%	[-2.7%, -2.7%]	1
All ❌✅ (primary)	7.7%	[7.7%, 7.7%]	1

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-1.9%	[-2.4%, -1.6%]	9
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-1.9%	[-2.4%, -1.6%]	9