From d747eebcb7a41da8e9a50d53d6914880c06c7dcb Mon Sep 17 00:00:00 2001
From: Tom Wilkie <tom.wilkie@gmail.com>
Date: Fri, 4 Dec 2015 10:25:56 +0000
Subject: [PATCH] Omit controls field from json if emtpy.

---
 report/topology.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/report/topology.go b/report/topology.go
index 76cf3b97f..4aa83d090 100644
--- a/report/topology.go
+++ b/report/topology.go
@@ -12,8 +12,8 @@ import (
 // EdgeMetadatas and Nodes respectively. Edges are directional, and embedded
 // in the Node struct.
 type Topology struct {
-	Nodes // TODO(pb): remove Nodes intermediate type
-	Controls
+	Nodes    `json:"nodes"`
+	Controls `json:"controls,omitempty"`
 }
 
 // MakeTopology gives you a Topology.