index + 1 can be simplified

[code423n4]

Handle

pauliax

Vulnerability details

Impact

This can be simplified to reduce gas costs by eliminating math operation:

  // before
  require(_accountIndex + 1 <= shareholders.length, "FeeSplitter: INVALID_ACCOUNT_INDEX");
  // after
  require(_accountIndex < shareholders.length, "FeeSplitter: INVALID_ACCOUNT_INDEX");