multi: add SpewLogClosure to avoid code repetition

sweep/fee_bumper.go

@@ -12,7 +12,6 @@ import (
 	"github.com/btcsuite/btcd/txscript"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcwallet/chain"
-	"github.com/davecgh/go-spew/spew"
 	"github.com/lightningnetwork/lnd/chainntnfs"
 	"github.com/lightningnetwork/lnd/fn"
 	"github.com/lightningnetwork/lnd/input"
@@ -313,10 +312,8 @@ func (t *TxPublisher) isNeutrinoBackend() bool {
 //
 // NOTE: part of the Bumper interface.
 func (t *TxPublisher) Broadcast(req *BumpRequest) (<-chan *BumpResult, error) {
-	log.Tracef("Received broadcast request: %s", lnutils.NewLogClosure(
-		func() string {
-			return spew.Sdump(req)
-		})())
+	log.Tracef("Received broadcast request: %s", lnutils.SpewLogClosure(
+		req))
 
 	// Attempt an initial broadcast which is guaranteed to comply with the
 	// RBF rules.

sweep/sweeper.go

@@ -1377,10 +1377,7 @@ func (s *UtxoSweeper) handleInputSpent(spend *chainntnfs.SpendDetail) {
 
 		log.Debugf("Detected third party spend related to in flight "+
 			"inputs (is_ours=%v): %v", isOurTx,
-			lnutils.NewLogClosure(func() string {
-				return spew.Sdump(spend.SpendingTx)
-			}),
-		)
+			lnutils.SpewLogClosure(spend.SpendingTx))
 	}
 
 	// We now use the spending tx to update the state of the inputs.