LowLevelETH: _returnETHIfAny; _returnETHIfAny; _returnETHIfAnyWithOneWeiLeft do not check if call was successful

Lines of code Vulnerability details Impact This means that the caller won't receive ETH but the transaction will continue, this could specially affects to function LookRareAggregator.execute, which use returnETHIfAnyaddress function, leading to originator lose of funds or mess up its state...