multi: formatting and comment fixes

lnrpc/invoicesrpc/addinvoice.go

@@ -157,7 +157,6 @@ func (d *AddInvoiceData) paymentHashAndPreimage() (
 // The preimage will always be nil.
 func (d *AddInvoiceData) ampPaymentHashAndPreimage() (*lntypes.Preimage, lntypes.Hash, error) {
 	switch {
-
 	// Preimages cannot be set on AMP invoice.
 	case d.Preimage != nil:
 		return nil, lntypes.Hash{},
@@ -285,7 +284,6 @@ func AddInvoice(ctx context.Context, cfg *AddInvoiceConfig,
 	}
 
 	switch {
-
 	// If expiry is set, specify it. If it is not provided, no expiry time
 	// will be explicitly added to this payment request, which will imply
 	// the default 3600 seconds.
@@ -313,7 +311,6 @@ func AddInvoice(ctx context.Context, cfg *AddInvoiceConfig,
 	// Otherwise, use the default AMP expiry.
 	default:
 		options = append(options, zpay32.Expiry(DefaultAMPInvoiceExpiry))
-
 	}
 
 	// If the description hash is set, then we add it do the list of options.
@@ -661,7 +658,7 @@ func sufficientHints(numHints, maxHints, scalingFactor int, amount,
 // channels. The set of hop hints will be returned as a slice of functional
 // options that'll append the route hint to the set of all route hints.
 //
-// TODO(roasbeef): do proper sub-set sum max hints usually << numChans
+// TODO(roasbeef): do proper sub-set sum max hints usually << numChans.
 func SelectHopHints(amtMSat lnwire.MilliSatoshi, cfg *SelectHopHintsCfg,
 	openChannels []*HopHintInfo,
 	numMaxHophints int) [][]zpay32.HopHint {

lnrpc/invoicesrpc/addinvoice_test.go

@@ -461,7 +461,6 @@ func TestSelectHopHints(t *testing.T) {
 				setMockChannelUsed(
 					h, private1ShortID, privateChan1Policy,
 				)
-
 			},
 			// Add two channels that we'd want to use, but the
 			// second one will be cut off due to our hop hint count

lnrpc/invoicesrpc/utils.go

@@ -38,7 +38,6 @@ func decodePayReq(invoice *channeldb.Invoice,
 			"request: %v", err)
 	}
 	return decoded, nil
-
 }
 
 // CreateRPCInvoice creates an *lnrpc.Invoice from the *channeldb.Invoice.
@@ -179,7 +178,6 @@ func CreateRPCInvoice(invoice *channeldb.Invoice,
 
 	rpcInvoice.AmpInvoiceState = make(map[string]*lnrpc.AMPInvoiceState)
 	for setID, ampState := range invoice.AMPState {
-
 		setIDStr := hex.EncodeToString(setID[:])
 
 		var state lnrpc.InvoiceHTLCState