From 99a5597547e1515dd5d441da4b4ec1ced1616cdc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Toma=C5=BE=20Jerman?= <tomaz.jerman121@gmail.com>
Date: Fri, 14 Jan 2022 15:29:42 +0100
Subject: [PATCH] Fix edgecase where ref value would become nil and panic the
 system

---
 pkg/envoy/resource/types.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkg/envoy/resource/types.go b/pkg/envoy/resource/types.go
index 7becb6148..3f08c66eb 100644
--- a/pkg/envoy/resource/types.go
+++ b/pkg/envoy/resource/types.go
@@ -260,7 +260,7 @@ func (rr RefSet) replaceRef(old, new *Ref) RefSet {
 		}
 	}
 
-	if !found {
+	if !found && new != nil {
 		return append(rr, new)
 	}