Feat: Sync for ETH settlement in CurrencySettler.sol #958
Description
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Describe the suggested feature and problem it solves.
The test util, CurrencySettler.sol currently does not sync() for the ETH case.
From PoolManager.sol, "if settling native, integrators should still call sync first to avoid DoS attack vectors".
file: https://github.com/Uniswap/v4-core/blob/main/test/utils/CurrencySettler.sol
ht @kadenzipfel for pointing this out in review of the community V4 swap router.
Describe the desired implementation.
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Describe alternatives.
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Additional context.
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