fix(DK): multiple commit fix

Author: unknownunknown1

contracts/src/arbitration/dispute-kits/DisputeKitClassicBase.sol

@@ -275,6 +275,7 @@ abstract contract DisputeKitClassicBase is IDisputeKit, Initializable, UUPSProxi
  Dispute storage dispute = disputes[coreDisputeIDToLocal[_coreDisputeID]];
  Round storage round = dispute.rounds[dispute.rounds.length - 1];
  for (uint256 i = 0; i < _voteIDs.length; i++) {
+ if (round.votes[_voteIDs[i]].commit != bytes32(0)) revert AlreadyCommittedThisVote();
  if (round.votes[_voteIDs[i]].account != msg.sender) revert JurorHasToOwnTheVote();
  round.votes[_voteIDs[i]].commit = _commit;
  }
@@ -759,4 +760,5 @@ abstract contract DisputeKitClassicBase is IDisputeKit, Initializable, UUPSProxi
  error AppealFeeIsAlreadyPaid();
  error DisputeNotResolved();
  error CoreIsPaused();
+ error AlreadyCommittedThisVote();
 }

contracts/test/foundry/KlerosCore_Voting.t.sol

@@ -97,6 +97,10 @@ contract KlerosCore_VotingTest is KlerosCore_TestBase {
  assertEq(commitStored, keccak256(abi.encodePacked(YES, salt)), "Incorrect commit");
  }
 
+ vm.prank(staker1);
+ vm.expectRevert(DisputeKitClassicBase.AlreadyCommittedThisVote.selector);
+ disputeKit.castCommit(disputeID, voteIDs, commit);
+
  // Check reveal in the next period
  vm.warp(block.timestamp + timesPerPeriod[1]);
  core.passPeriod(disputeID);