From 6335ad4f96843110b94599dd33d5dbade0d8c613 Mon Sep 17 00:00:00 2001
From: jholdstock <jholdstock@decred.org>
Date: Wed, 16 Oct 2024 09:44:04 +0100
Subject: [PATCH] client: Send empty maps instead of nil.

---
 client/client.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/client/client.go b/client/client.go
index b1797fdb..16462d73 100644
--- a/client/client.go
+++ b/client/client.go
@@ -66,6 +66,15 @@ func (c *Client) FeeAddress(ctx context.Context, req types.FeeAddressRequest,
 func (c *Client) PayFee(ctx context.Context, req types.PayFeeRequest,
 	commitmentAddr stdaddr.Address) (*types.PayFeeResponse, error) {
 
+	// TSpendPolicy and TreasuryPolicy are optional but must be an empty map
+	// rather than nil.
+	if req.TSpendPolicy == nil {
+		req.TSpendPolicy = map[string]string{}
+	}
+	if req.TreasuryPolicy == nil {
+		req.TreasuryPolicy = map[string]string{}
+	}
+
 	requestBody, err := json.Marshal(req)
 	if err != nil {
 		return nil, err
@@ -110,6 +119,15 @@ func (c *Client) TicketStatus(ctx context.Context, req types.TicketStatusRequest
 func (c *Client) SetVoteChoices(ctx context.Context, req types.SetVoteChoicesRequest,
 	commitmentAddr stdaddr.Address) (*types.SetVoteChoicesResponse, error) {
 
+	// TSpendPolicy and TreasuryPolicy are optional but must be an empty map
+	// rather than nil.
+	if req.TSpendPolicy == nil {
+		req.TSpendPolicy = map[string]string{}
+	}
+	if req.TreasuryPolicy == nil {
+		req.TreasuryPolicy = map[string]string{}
+	}
+
 	requestBody, err := json.Marshal(req)
 	if err != nil {
 		return nil, err