Do not iterate to drop if empty #182
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If the table is empty, there is no need to iterate over all the buckets in order to drop their contents. Fixes rust-lang#170.
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Update hashbrown to 0.8.2 Includes: - Avoid closures to improve compile times (rust-lang/hashbrown#183) - Do not iterate to drop if empty (rust-lang/hashbrown#182) r? @Mark-Simulacrum
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If the table is empty, there is no need to iterate over all the buckets
in order to drop their contents.
Fixes #170.