multi: fix a-vs-an typos

channeldb/channel.go

@@ -660,7 +660,7 @@ func fetchOpenChannel(chanBucket *bolt.Bucket,
 // channels in the database globally, or according to the LinkNode they were
 // created with.
 //
-// TODO(roasbeef): addr param should eventually be a lnwire.NetAddress type
+// TODO(roasbeef): addr param should eventually be an lnwire.NetAddress type
 // that includes service bits.
 func (c *OpenChannel) SyncPending(addr net.Addr, pendingHeight uint32) error {
 	c.Lock()

channeldb/graph.go

@@ -65,8 +65,8 @@ var (
 	// in the bucket, grouping them according to their in/out nodes.
 	// Additionally, the items in this bucket also contain the complete
 	// edge information for a channel. The edge information includes the
-	// capacity of the channel, the nodes that made the channel, etc.  This
-	// bucket resides within the edgeBucket above.  Creation of a edge
+	// capacity of the channel, the nodes that made the channel, etc. This
+	// bucket resides within the edgeBucket above. Creation of an edge
 	// proceeds in two phases: first the edge is added to the edge index,
 	// afterwards the edgeBucket can be updated with the latest details of
 	// the edge as they are announced on the network.
@@ -1244,7 +1244,7 @@ func (l *LightningNode) ForEachChannel(tx *bolt.Tx,
 
 // ChannelEdgeInfo represents a fully authenticated channel along with all its
 // unique attributes. Once an authenticated channel announcement has been
-// processed on the network, then a instance of ChannelEdgeInfo encapsulating
+// processed on the network, then an instance of ChannelEdgeInfo encapsulating
 // the channels attributes is stored. The other portions relevant to routing
 // policy of a channel are stored within a ChannelEdgePolicy for each direction
 // of the channel.

channeldb/graph_test.go

@@ -482,7 +482,7 @@ func TestDisconnectBlockAtHeight(t *testing.T) {
 	}
 
 	// Call DisconnectBlockAtHeight, which should prune every channel
-	// that has an funding height of 'height' or greater.
+	// that has a funding height of 'height' or greater.
 	removed, err := graph.DisconnectBlockAtHeight(uint32(height))
 	if err != nil {
 		t.Fatalf("unable to prune %v", err)

channeldb/invoices.go

@@ -45,7 +45,7 @@ const (
 	// within the database along side incoming/outgoing invoices.
 	MaxReceiptSize = 1024
 
-	// MaxPaymentRequestSize is the max size of a a payment request for
+	// MaxPaymentRequestSize is the max size of a payment request for
 	// this invoice.
 	// TODO(halseth): determine the max length payment request when field
 	// lengths are final.

channeldb/nodes.go

@@ -147,7 +147,7 @@ func (db *DB) FetchLinkNode(identity *btcec.PublicKey) (*LinkNode, error) {
 		}
 
 		// If a link node for that particular public key cannot be
-		// located, then exit early with a ErrNodeNotFound.
+		// located, then exit early with an ErrNodeNotFound.
 		pubKey := identity.SerializeCompressed()
 		nodeBytes := nodeMetaBucket.Get(pubKey)
 		if nodeBytes == nil {