Unused storage variable in UsdmMinter.sol

[code423n4]

Handle

harleythedog

Vulnerability details

Impact

In UsdmMinter.sol, there is a public array called "factories", but this array is never added to or altered anywhere within the contract. So, this array will always be empty and doesn't seem like it would be of any use to anyone, so I recommend removing it to save gas.

Proof of Concept

Variable declaration here: https://github.com/code-423n4/2021-10-mochi/blob/main/projects/mochi-core/contracts/minter/UsdmMinter.sol#:~:text=address%5B%5D%20public%20factories%3B

Tools Used

Manual inspection.

Recommended Mitigation Steps

Remove unused variable to optimize gas.