(exploit/fix) Unlimited money

[jnccloud]

Describe Pull request This patches a free money exploit. If you try to withdrawal a negative amount, that amount is deposited into the money menu regardless of your funds on hand.

If your PR is to fix an issue mention that issue here

Questions (please complete the following information):

• Have you personally loaded this code into an updated qbcore project and checked all it's functionality? [yes/no] (Be honest) yes
• Does your code fit the style guidelines? [yes/no] yes
• Does your PR fit the contribution guidelines? [yes/no] yes

[jnccloud]

The only change I made is added a check for if amount > 0 then ... end on both server sided files. Blame GH for the web for the weird compare.