Valid high severity, this allows resellers listing offers via `listOffer/relistOffer` to game the system. Based on the inherent design of Turbo mode not requiring takers making ask offers for the original maker offer to deposit collateral, the wrong refund of collateral to takers even when they did not deposit collateral due to turbo mode during settleAskMaker allows possible draining of pools.
Leaving high severity for now but will leave open for appeals. Technically, users can choose not to transact this type offers if they are aware of such undercollaterized relisted offers, in which case it will have no impact. However, if subsequent takers transact this relisted offers, this can allow profits without having to settle any points.
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