Utilize Option::cloned over explicit clone usage.

[frewsxcv]

No description provided.

[rust-highfive]

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

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[alexcrichton]

@bors: r+ 8842e398b0a0f3ae1ada682c3cef358fb98e7f22

[Stebalien]

Why not just config.filter.clone()?

[frewsxcv]

Why not just config.filter.clone()?

Thanks for pointing this out. I didn't know that calling clone on an &Option would result in the inner data getting cloned as well.

Force pushed the commit with that change and also updated .get(0) to .first().

[alexcrichton]

@bors: r+ 8f008ba

[bors]

⌛ Testing commit 8f008ba with merge 4db8b5b...

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-64-debug-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-opt-rustbuild, auto-linux-64-x-android-t, auto-linux-cross-opt, auto-linux-musl-64-opt, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-mac-ios-opt, auto-win-gnu-32-nopt-t, auto-win-gnu-32-opt, auto-win-gnu-64-nopt-t, auto-win-gnu-64-opt, auto-win-msvc-32-opt, auto-win-msvc-64-opt