From 94a11ff2e8c2e8000f1bd3efc42c839079e5d3ad Mon Sep 17 00:00:00 2001
From: Matthias Radestock <matthias.radestock@gmail.com>
Date: Mon, 29 May 2017 14:06:55 +0100
Subject: [PATCH] encode empty ps.Maps as nil

every little helps
---
 report/map_helpers.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/report/map_helpers.go b/report/map_helpers.go
index 3d6bc7a057..080914490a 100644
--- a/report/map_helpers.go
+++ b/report/map_helpers.go
@@ -125,7 +125,7 @@ func mapRead(decoder *codec.Decoder, decodeValue func(isNil bool) interface{}) p
 // undocumented internal APIs apply.
 func mapWrite(m ps.Map, encoder *codec.Encoder, encodeValue func(*codec.Encoder, interface{})) {
 	z, r := codec.GenHelperEncoder(encoder)
-	if m == nil {
+	if m == nil || m.IsNil() {
 		r.EncodeNil()
 		return
 	}