From f28b10737265a6f898d21119af55c1f7a011a713 Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@unistack.org>
Date: Thu, 1 Jul 2021 23:23:01 +0300
Subject: [PATCH] broker: fix RawMessage marshal

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
---
 broker/broker.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/broker/broker.go b/broker/broker.go
index 9b5a2430..fc1bde6a 100644
--- a/broker/broker.go
+++ b/broker/broker.go
@@ -42,7 +42,7 @@ type RawMessage []byte
 // MarshalJSON returns m as the JSON encoding of m.
 func (m *RawMessage) MarshalJSON() ([]byte, error) {
 	if m == nil {
-		return nil, nil
+		return []byte("null"), nil
 	}
 	return *m, nil
 }