From 0c0be078c60b65fe990bf498b48cb426333573b4 Mon Sep 17 00:00:00 2001
From: Andrew Belt <andrewpbelt@gmail.com>
Date: Fri, 5 Apr 2019 02:18:49 -0400
Subject: [PATCH] Only serialize left/rightModuleId if valid ID

---
 src/engine/Module.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/engine/Module.cpp b/src/engine/Module.cpp
index 8d3c20fa..da0f5648 100644
--- a/src/engine/Module.cpp
+++ b/src/engine/Module.cpp
@@ -49,10 +49,12 @@ json_t *Module::toJson() {
 	}
 
 	// leftModuleId
-	json_object_set_new(rootJ, "leftModuleId", json_integer(leftModuleId));
+	if (leftModuleId >= 0)
+		json_object_set_new(rootJ, "leftModuleId", json_integer(leftModuleId));
 
 	// rightModuleId
-	json_object_set_new(rootJ, "rightModuleId", json_integer(rightModuleId));
+	if (rightModuleId >= 0)
+		json_object_set_new(rootJ, "rightModuleId", json_integer(rightModuleId));
 
 	return rootJ;
 }