fix: change less than = 0 in contracts to == 0to reduce gas costs when the number is unsigned (yetanotherco#892)

Author: NicolasRampoldi

contracts/scripts/anvil/state/alignedlayer-deployed-anvil-state.json

@@ -67,7 +67,7 @@ contract AlignedLayerServiceManager is
             );
         }
 
-        if (batchersBalances[msg.sender] <= 0) {
+        if (batchersBalances[msg.sender] == 0) {
             revert BatcherBalanceIsEmpty(msg.sender);
         }
 
@@ -111,7 +111,7 @@ contract AlignedLayerServiceManager is
             revert BatchAlreadyResponded(batchIdentifierHash);
         }
 
-        if (batchersBalances[senderAddress] <= 0) {
+        if (batchersBalances[senderAddress] == 0) {
             revert BatcherHasNoBalance(senderAddress);
         }
 
@@ -228,7 +228,7 @@ contract AlignedLayerServiceManager is
     }
 
     function _depositToBatcher(address account, uint256 amount) internal {
-        if (amount <= 0) {
+        if (amount == 0) {
             revert InvalidDepositAmount(amount);
         }
         batchersBalances[account] += amount;

contracts/src/core/AlignedLayerServiceManager.sol

@@ -117,11 +117,11 @@ contract BatcherPaymentService is
         uint256 feeForAggregator = gasForAggregator * tx.gasprice;
         uint256 feePerProof = gasPerProof * tx.gasprice;
 
-        if (leavesQty <= 0) {
+        if (leavesQty == 0) {
             revert NoLeavesSubmitted();
         }
 
-        if (signaturesQty <= 0) {
+        if (signaturesQty == 0) {
             revert NoProofSubmitterSignatures();
         }
 
@@ -133,11 +133,11 @@ contract BatcherPaymentService is
             revert LeavesNotPowerOfTwo(leavesQty);
         }
 
-        if (feeForAggregator <= 0) {
+        if (feeForAggregator == 0) {
             revert NoGasForAggregator();
         }
 
-        if (feePerProof <= 0) {
+        if (feePerProof == 0) {
             revert NoGasPerProof();
         }
 
@@ -170,7 +170,7 @@ contract BatcherPaymentService is
     }
 
     function unlock() external whenNotPaused {
-        if (userData[msg.sender].balance <= 0) {
+        if (userData[msg.sender].balance == 0) {
             revert UserHasNoFundsToUnlock(msg.sender);
         }
 
@@ -179,7 +179,7 @@ contract BatcherPaymentService is
     }
 
     function lock() external whenNotPaused {
-        if (userData[msg.sender].balance <= 0) {
+        if (userData[msg.sender].balance == 0) {
             revert UserHasNoFundsToLock(msg.sender);
         }
         userData[msg.sender].unlockBlock = 0;