AI-powered audit ally. Enhance cybersecurity effortlessly with intelligent, automated security analysis. Safe, swift, and smart. Hello Make security audit on this smart contract code: contract DepositFunds { mapping(address => uint) public balances; function deposit() public payable { balances[msg.sender] += msg.value; } function withdraw() public { uint bal = balances[msg.sender]; require(bal > 0); (bool sent, ) = msg.sender.call{value: bal}(""); require(sent, "Failed to send Ether"); balances[msg.sender] = 0; } } What common vulnerabilities are present in the following code: Audit smart contract Tell me if my code is secure #programming