lnwallet: use new ChainNotifier API, typo fixes

lnwallet/channel.go

@@ -775,7 +775,8 @@ func NewLightningChannel(signer Signer, events chainntnfs.ChainNotifier,
 		// the remote party has broadcasted a commitment transaction
 		// on-chain.
 		fundingOut := &lc.fundingTxIn.PreviousOutPoint
-		channelCloseNtfn, err := lc.channelEvents.RegisterSpendNtfn(fundingOut)
+		openHeight := lc.channelState.OpeningHeight
+		channelCloseNtfn, err := lc.channelEvents.RegisterSpendNtfn(fundingOut, openHeight)
 		if err != nil {
 			return nil, err
 		}

lnwallet/script_utils.go

@@ -69,8 +69,8 @@ func genMultiSigScript(aPub, bPub []byte) ([]byte, error) {
 
 	// Swap to sort pubkeys if needed. Keys are sorted in lexicographical
 	// order. The signatures within the scriptSig must also adhere to the
-	// order, ensuring that the signatures for each public key appears
-	// in the proper order on the stack.
+	// order, ensuring that the signatures for each public key appears in
+	// the proper order on the stack.
 	if bytes.Compare(aPub, bPub) == -1 {
 		aPub, bPub = bPub, aPub
 	}