lint nested patterns and slice patterns in needless_borrowed_reference

[Alexendoo]

Now lints in positions other than top level, e.g. Some(&ref a). Or patterns are excluded as that can cause issues

Slice patterns of refs are now linted, e.g. &[ref a, ref b]. An easy one to walk into as you might expect that to match against a slice you should use &[], then to get around a cannot move out of type [T] error you apply a ref

changelog: [needless_borrowed_reference]: lint nested patterns and slice patterns

[rust-highfive]

r? @dswij

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[dswij]

LGTM, thanks for this!

[dswij]

@bors r+

[bors]

📌 Commit 52a68dc has been approved by dswij

It is now in the queue for this repository.

[bors]

⌛ Testing commit 52a68dc with merge 5d837b5...

[bors]

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: dswij
Pushing 5d837b5 to master...