multi: fix linter errors

channeldb/channel.go

@@ -1790,7 +1790,8 @@ func (c *OpenChannel) RemoveFwdPkg(height uint64) error {
 
 // RevocationLogTail returns the "tail", or the end of the current revocation
 // log. This entry represents the last previous state for the remote node's
-// commitment chain. The ChannelDelta returned by this method will always lag one state behind the most current (unrevoked) state of the remote node's
+// commitment chain. The ChannelDelta returned by this method will always lag
+// one state behind the most current (unrevoked) state of the remote node's
 // commitment chain.
 func (c *OpenChannel) RevocationLogTail() (*ChannelCommitment, error) {
 	c.RLock()

htlcswitch/switch.go

@@ -1194,11 +1194,7 @@ func (s *Switch) handlePacketForward(packet *htlcPacket) error {
 				fail.Reason = circuit.ErrorEncrypter.EncryptMalformedError(
 					fail.Reason,
 				)
-				if err != nil {
-					err = fmt.Errorf("unable to obfuscate "+
-						"error: %v", err)
-					log.Error(err)
-				}
+
 			default:
 				// Otherwise, it's a forwarded error, so we'll perform a
 				// wrapper encryption as normal.

macaroons/constraints_test.go

@@ -11,14 +11,14 @@ import (
 
 var (
 	testRootKey                 = []byte("dummyRootKey")
-	testId                      = []byte("dummyId")
+	testID                      = []byte("dummyId")
 	testLocation                = "lnd"
 	testVersion                 = macaroon.LatestVersion
 	expectedTimeCaveatSubstring = "time-before " + string(time.Now().Year())
 )
 
 func createDummyMacaroon(t *testing.T) *macaroon.Macaroon {
-	dummyMacaroon, err := macaroon.New(testRootKey, testId,
+	dummyMacaroon, err := macaroon.New(testRootKey, testID,
 		testLocation, testVersion)
 	if err != nil {
 		t.Fatalf("Error creating initial macaroon: %v", err)

watchtower/wtdb/client_db.go

@@ -665,7 +665,7 @@ func (c *ClientDB) RegisterChannel(chanID lnwire.ChannelID,
 		case err == ErrChannelNotRegistered:
 
 		// Unexpected error.
-		case err != nil:
+		default:
 			return err
 		}
 

watchtower/wtdb/codec.go

@@ -22,7 +22,7 @@ func ReadElement(r io.Reader, element interface{}) error {
 		return nil
 
 	// Fail if error is not UnknownElementType.
-	case err != nil:
+	default:
 		if _, ok := err.(UnknownElementType); !ok {
 			return err
 		}
@@ -80,7 +80,7 @@ func WriteElement(w io.Writer, element interface{}) error {
 		return nil
 
 	// Fail if error is not UnknownElementType.
-	case err != nil:
+	default:
 		if _, ok := err.(UnknownElementType); !ok {
 			return err
 		}