[BUGFIX] meshviewer-ffrgb export empty array

output/meshviewer-ffrgb/struct.go

@@ -78,15 +78,18 @@ func NewNode(nodes *runtime.Nodes, n *runtime.Node) *Node {
 		Lastseen:  n.Lastseen,
 		IsOnline:  n.Online,
 		IsGateway: n.IsGateway(),
+		Addresses: []string{},
 	}
 
 	if nodeinfo := n.Nodeinfo; nodeinfo != nil {
 		node.NodeID = nodeinfo.NodeID
 		node.MAC = nodeinfo.Network.Mac
-		node.Addresses = nodeinfo.Network.Addresses
 		node.SiteCode = nodeinfo.System.SiteCode
 		node.DomainCode = nodeinfo.System.DomainCode
 		node.Hostname = nodeinfo.Hostname
+		if addresses := nodeinfo.Network.Addresses; addresses != nil {
+			node.Addresses = nodeinfo.Network.Addresses
+		}
 		if owner := nodeinfo.Owner; owner != nil {
 			node.Owner = owner.Contact
 		}

output/meshviewer-ffrgb/struct_test.go

@@ -12,6 +12,20 @@ func TestRegister(t *testing.T) {
 	assert := assert.New(t)
 	nodes := runtime.NewNodes(&runtime.NodesConfig{})
 	node := NewNode(nodes, &runtime.Node{
+		Nodeinfo: &data.NodeInfo{
+			Owner: &data.Owner{
+				Contact: "whoami",
+			},
+			Network: data.Network{
+				Mac:       "blub",
+				Addresses: []string{"fe80::1"},
+			},
+		},
+	})
+	assert.NotNil(node)
+	assert.Len(node.Addresses, 1)
+
+	node = NewNode(nodes, &runtime.Node{
 		Nodeinfo: &data.NodeInfo{
 			Owner: &data.Owner{
 				Contact: "whoami",
@@ -46,6 +60,7 @@ func TestRegister(t *testing.T) {
 		},
 	})
 	assert.NotNil(node)
+	assert.NotNil(node.Addresses)
 	assert.Equal("whoami", node.Owner)
 	assert.Equal("blub", node.MAC)
 	assert.Equal(13.3, node.Location.Longitude)