From 044103c1604b33bb05e613228d03596c93f7d0e6 Mon Sep 17 00:00:00 2001
From: TA2k <tombox2020@gmail.com>
Date: Sun, 22 Oct 2023 10:12:54 +0200
Subject: [PATCH] Add callback call check

---
 lib/events.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/events.js b/lib/events.js
index 3cfb90c..fcce4f4 100644
--- a/lib/events.js
+++ b/lib/events.js
@@ -305,7 +305,7 @@ module.exports = function(Cam) {
 				this.removeAllListeners('event'); // We can subscribe again only if there is no 'event' listener
 				var data = linerase(res).unsubscribeResponse;
 			}
-			if (callback) {
+			if (callback && callback.call) {
 				callback.call(this, err, data, xml);
 			}
 		}.bind(this));