From 06d72b93dacab48afafed6cf262bbc67bd54796a Mon Sep 17 00:00:00 2001
From: vyzo <vyzo@hackzen.org>
Date: Wed, 11 Mar 2020 02:44:57 +0200
Subject: [PATCH] fix bug in WithEventTracer

wrong nil check.
---
 pubsub.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pubsub.go b/pubsub.go
index dabcdbc..df5970c 100644
--- a/pubsub.go
+++ b/pubsub.go
@@ -361,7 +361,7 @@ func WithDiscovery(d discovery.Discovery, opts ...DiscoverOpt) Option {
 // WithEventTracer provides a tracer for the pubsub system
 func WithEventTracer(tracer EventTracer) Option {
 	return func(p *PubSub) error {
-		if tracer != nil {
+		if p.tracer != nil {
 			p.tracer.tracer = tracer
 		} else {
 			p.tracer = &pubsubTracer{tracer: tracer, pid: p.host.ID(), msgID: p.msgID}