From eecd319ee3dd8306e8f015cc429b43e140eec06b Mon Sep 17 00:00:00 2001
From: Vladimir Mihailenco <vladimir.webdev@gmail.com>
Date: Thu, 21 May 2020 09:10:43 +0300
Subject: [PATCH] Fix nil type assertion

---
 pubsub.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pubsub.go b/pubsub.go
index e1164093..26cde242 100644
--- a/pubsub.go
+++ b/pubsub.go
@@ -309,9 +309,11 @@ func (c *PubSub) newMessage(reply interface{}) (interface{}, error) {
 	case []interface{}:
 		switch kind := reply[0].(string); kind {
 		case "subscribe", "unsubscribe", "psubscribe", "punsubscribe":
+			// Can be nil in case of "unsubscribe".
+			channel, _ := reply[1].(string)
 			return &Subscription{
 				Kind:    kind,
-				Channel: reply[1].(string),
+				Channel: channel,
 				Count:   int(reply[2].(int64)),
 			}, nil
 		case "message":