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use reserve

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Co-authored-by: Richard Feldman <oss@rtfeldman.com>
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Folkert de Vries 2021-07-22 21:14:46 +02:00 • committed by GitHub
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compiler/unify/src/unify.rs
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@ -900,6 +900,7 @@ fn unify_shared_tags(
match other_tags {
OtherTags::Empty => {}
OtherTags::Union { tags1, tags2 } => {
new_tags.reserve(tags1.len() + tags2.len());
new_tags.extend(tags1);
new_tags.extend(tags2);
}