From 6196d56fc28f8bf06a236c38d6038fafbe9f6561 Mon Sep 17 00:00:00 2001
From: Dmitriy Ryajov <dryajov@gmail.com>
Date: Fri, 8 May 2020 15:44:18 -0600
Subject: [PATCH] check for nil observers

---
 libp2p/protocols/pubsub/pubsubpeer.nim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libp2p/protocols/pubsub/pubsubpeer.nim b/libp2p/protocols/pubsub/pubsubpeer.nim
index 8e19f7d..ce5c156 100644
--- a/libp2p/protocols/pubsub/pubsubpeer.nim
+++ b/libp2p/protocols/pubsub/pubsubpeer.nim
@@ -83,7 +83,7 @@ proc send*(p: PubSubPeer, msgs: seq[RPCMsg]) {.async.} =
       trace "sending msgs to peer", toPeer = p.id
       let encoded = encodeRpcMsg(m)
       # trigger hooks
-      if p.observers[].len > 0:
+      if not(isNil(p.observers)) and p.observers[].len > 0:
         var mm = m
         for obs in p.observers[]:
           obs.onSend(p, mm)