fix(evmengine): nil panic with optimistic build enabled (piplabs#128)

cmtAPI is lazily set, so during replyBlocks it is nil.

client/x/evmengine/keeper/keeper.go

@@ -172,6 +172,12 @@ func (k *Keeper) parseAndVerifyProposedPayload(ctx context.Context, msg *types.M
 //
 // Note that the validator set can change, so this is an optimistic check.
 func (k *Keeper) isNextProposer(ctx context.Context, currentProposer []byte, currentHeight int64) (bool, error) {
+ // PostFinalize can be called during block replay (performed in newCometNode),
+ // but cmtAPI is set only after newCometNode completes (see app.SetCometAPI), so a nil check is necessary.
+ if k.cmtAPI == nil {
+ return false, nil
+ }
+
  valset, ok, err := k.cmtAPI.Validators(ctx, currentHeight)
  if err != nil {
  return false, err