nil guard on mempool

baseapp/baseapp.go

@@ -4,13 +4,14 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/cosmos/gogoproto/proto"
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/crypto/tmhash"
 	"github.com/tendermint/tendermint/libs/log"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 	dbm "github.com/tendermint/tm-db"
 
+	"github.com/cosmos/gogoproto/proto"
+
 	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
 	"github.com/cosmos/cosmos-sdk/snapshots"
 	"github.com/cosmos/cosmos-sdk/store"
@@ -53,7 +54,7 @@ type BaseApp struct { //nolint: maligned
 	interfaceRegistry codectypes.InterfaceRegistry
 	txDecoder         sdk.TxDecoder // unmarshal []byte into sdk.Tx
 
-	mempool        sdk.Mempool
+	mempool        sdk.Mempool      // application side mempool
 	anteHandler    sdk.AnteHandler  // ante handler for fee and auth
 	postHandler    sdk.AnteHandler  // post handler, optional, e.g. for tips
 	initChainer    sdk.InitChainer  // initialize state with validators and state blob
@@ -666,8 +667,8 @@ func (app *BaseApp) runTx(mode runTxMode, txBytes []byte) (gInfo sdk.GasInfo, re
 		anteEvents = events.ToABCIEvents()
 	}
 
-	if mode == runTxModeCheck {
-		// TODO add the tx to the mempool
+	// TODO remove nil check when implemented
+	if mode == runTxModeCheck && app.mempool != nil {
 		err = app.mempool.Insert(ctx, tx.(sdk.MempoolTx))
 		if err != nil {
 			return gInfo, nil, anteEvents, priority, err