multi: rename FundingLocked to ChannelReady

This commit is created by running,

```shell
gofmt -d -w -r 'FundingLocked -> ChannelReady' .

gco master channeldb/migration
```

lnwire/funding_locked.go

@@ -13,7 +13,7 @@ import (
 // blockchain. FundingLocked contains the signatures necessary for the channel
 // participants to advertise the existence of the channel to the rest of the
 // network.
-type FundingLocked struct {
+type ChannelReady struct {
 	// ChanID is the outpoint of the channel's funding transaction. This
 	// can be used to query for the channel in the database.
 	ChanID ChannelID
@@ -35,8 +35,8 @@ type FundingLocked struct {
 
 // NewFundingLocked creates a new FundingLocked message, populating it with the
 // necessary IDs and revocation secret.
-func NewFundingLocked(cid ChannelID, npcp *btcec.PublicKey) *FundingLocked {
-	return &FundingLocked{
+func NewFundingLocked(cid ChannelID, npcp *btcec.PublicKey) *ChannelReady {
+	return &ChannelReady{
 		ChanID:                 cid,
 		NextPerCommitmentPoint: npcp,
 		ExtraData:              make([]byte, 0),
@@ -45,14 +45,14 @@ func NewFundingLocked(cid ChannelID, npcp *btcec.PublicKey) *FundingLocked {
 
 // A compile time check to ensure FundingLocked implements the lnwire.Message
 // interface.
-var _ Message = (*FundingLocked)(nil)
+var _ Message = (*ChannelReady)(nil)
 
 // Decode deserializes the serialized FundingLocked message stored in the
 // passed io.Reader into the target FundingLocked using the deserialization
 // rules defined by the passed protocol version.
 //
 // This is part of the lnwire.Message interface.
-func (c *FundingLocked) Decode(r io.Reader, pver uint32) error {
+func (c *ChannelReady) Decode(r io.Reader, pver uint32) error {
 	// Read all the mandatory fields in the message.
 	err := ReadElements(r,
 		&c.ChanID,
@@ -85,7 +85,7 @@ func (c *FundingLocked) Decode(r io.Reader, pver uint32) error {
 // protocol version.
 //
 // This is part of the lnwire.Message interface.
-func (c *FundingLocked) Encode(w *bytes.Buffer, pver uint32) error {
+func (c *ChannelReady) Encode(w *bytes.Buffer, pver uint32) error {
 	if err := WriteChannelID(w, c.ChanID); err != nil {
 		return err
 	}
@@ -110,6 +110,6 @@ func (c *FundingLocked) Encode(w *bytes.Buffer, pver uint32) error {
 // FundingLocked message on the wire.
 //
 // This is part of the lnwire.Message interface.
-func (c *FundingLocked) MsgType() MessageType {
+func (c *ChannelReady) MsgType() MessageType {
 	return MsgFundingLocked
 }

lnwire/lnwire_test.go

@@ -1014,7 +1014,7 @@ func TestLightningWireProtocol(t *testing.T) {
 		},
 		{
 			msgType: MsgFundingLocked,
-			scenario: func(m FundingLocked) bool {
+			scenario: func(m ChannelReady) bool {
 				return mainScenario(&m)
 			},
 		},

lnwire/message.go

@@ -191,7 +191,7 @@ func makeEmptyMessage(msgType MessageType) (Message, error) {
 	case MsgFundingSigned:
 		msg = &FundingSigned{}
 	case MsgFundingLocked:
-		msg = &FundingLocked{}
+		msg = &ChannelReady{}
 	case MsgShutdown:
 		msg = &Shutdown{}
 	case MsgClosingSigned:

lnwire/message_test.go

@@ -442,7 +442,7 @@ func newMsgFundingSigned(t testing.TB, r io.Reader) *lnwire.FundingSigned {
 	return msg
 }
 
-func newMsgFundingLocked(t testing.TB, r io.Reader) *lnwire.FundingLocked {
+func newMsgFundingLocked(t testing.TB, r io.Reader) *lnwire.ChannelReady {
 	t.Helper()
 
 	var c [32]byte