Gas Optimizations

[code423n4]

FOR-LOOPS: ++i COSTS LESS GAS THAN i++

++i costs less gas than I++ for unsigned integer, it costs 5 gas per iteration.
And also i suggest to change uint256 i=0 to uint256 i. The default value of variable is 0 for unsigned integer. So explicitly initializing it with its default value is an anti-pattern and wastes gas.

for (uint256 i = 0; i < rewardTokensLength; i++) {

I suggest you to change those line into:

for (uint256 i; i < rewardTokensLength; i++){

This already done here:
https://github.com/code-423n4/2022-05-aura/blob/main/contracts/AuraLocker.sol#L306
for (uint256 i; i < rewardTokensLength; i++) {

Instance include:
https://github.com/code-423n4/2022-05-aura/blob/main/convex-platform/contracts/contracts/Booster.sol#L222
https://github.com/code-423n4/2022-05-aura/blob/main/convex-platform/contracts/contracts/Booster.sol#L379
https://github.com/code-423n4/2022-05-aura/blob/main/contracts/AuraLocker.sol#L174

[dmvt]

Grouping this with the warden’s gas report, #216