multi: Fix various typos.

channeldb/channel_test.go

@@ -125,9 +125,6 @@ func createTestChannelState(cdb *DB) (*OpenChannel, error) {
 		}
 	}
 
-	var obsfucator [6]byte
-	copy(obsfucator[:], key[:])
-
 	localCfg := ChannelConfig{
 		ChannelConstraints: ChannelConstraints{
 			DustLimit:        btcutil.Amount(rand.Int63()),

channeldb/invoice_test.go

@@ -107,7 +107,7 @@ func TestInvoiceWorkflow(t *testing.T) {
 			"instead %v", err)
 	}
 
-	// Attempt to look up a non-existant invoice, this should also fail but
+	// Attempt to look up a non-existent invoice, this should also fail but
 	// with a "not found" error.
 	var fakeHash [32]byte
 	if _, err := db.LookupInvoice(fakeHash); err != ErrInvoiceNotFound {