Merge pull request #8220 from ethereum-optimism/ctb/silence-compiler-error

ctb: silence compiler warning

packages/contracts-bedrock/.gas-snapshot

@@ -469,9 +469,9 @@ OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_ifOutp
 OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_ifOutputTimestampIsNotFinalized_reverts() (gas: 181439)
 OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_ifWithdrawalNotProven_reverts() (gas: 41777)
 OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_ifWithdrawalProofNotOldEnough_reverts() (gas: 173449)
-OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_onInsufficientGas_reverts() (gas: 180336)
+OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_onInsufficientGas_reverts() (gas: 180332)
 OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_onRecentWithdrawal_reverts() (gas: 154191)
-OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_onReentrancy_reverts() (gas: 218388)
+OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_onReentrancy_reverts() (gas: 218384)
 OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_onReplay_reverts() (gas: 219614)
 OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_paused_reverts() (gas: 53666)
 OptimismPortal_FinalizeWithdrawal_Test:test_finalizeWithdrawalTransaction_provenWithdrawalHash_succeeds() (gas: 208960)

packages/contracts-bedrock/test/LibPosition.t.sol

@@ -12,7 +12,7 @@ contract LibPosition_Test is Test {
     ///      will likely be much lower.
     uint8 internal constant MAX_DEPTH = 63;
 
-    function boundIndexAtDepth(uint8 _depth, uint64 _indexAtDepth) internal view returns (uint64) {
+    function boundIndexAtDepth(uint8 _depth, uint64 _indexAtDepth) internal pure returns (uint64) {
         // Index at depth bound: [0, 2 ** _depth-1]
         if (_depth > 0) {
             return uint64(bound(_indexAtDepth, 0, 2 ** (_depth - 1)));