New assets are pushed into the state variable assets array, at the function BondNFT.addAsset().
https://github.com/code-423n4/2022-12-tigris/blob/main/contracts/BondNFT.sol#L352
Lock.claimGovFees() will iterate all the assets.
https://github.com/code-423n4/2022-12-tigris/blob/main/contracts/Lock.sol#L110-L120
Currently, assets can grow indefinitely. E.g. theres no maximum limit and theres no functionality to remove assets.
If the array grows too large, calling Lack.claimGovFeeds() might run out of gas and revert. Claiming and distributing rewards will result in a DOS condition.
Add a functionality to delete assets or add a maximum size limit for assets.
