From f9b79d24f8e7511ba2140844b6709db70f86d21c Mon Sep 17 00:00:00 2001
From: Lea Anthony <lea.anthony@gmail.com>
Date: Sat, 6 Mar 2021 15:51:06 +1100
Subject: [PATCH] Guard against nil url messages

---
 v2/internal/subsystem/url.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/v2/internal/subsystem/url.go b/v2/internal/subsystem/url.go
index e8dd56b02..83cde87ce 100644
--- a/v2/internal/subsystem/url.go
+++ b/v2/internal/subsystem/url.go
@@ -68,6 +68,10 @@ func (u *URL) Start() error {
 				u.wg.Done()
 				return
 			case urlMessage := <-u.urlChannel:
+				// Guard against nil messages
+				if urlMessage == nil {
+					continue
+				}
 				messageType := strings.TrimPrefix(urlMessage.Topic(), "url:")
 				switch messageType {
 				case "handler":