From e4831909d6d76000430abf245da269a8e07b8f31 Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Tue, 26 Jan 2021 12:22:26 -0500
Subject: [PATCH] get_packet can return null if we are terminating

---
 src/zm_monitor.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/zm_monitor.cpp b/src/zm_monitor.cpp
index b5fd5a5f3..186590909 100644
--- a/src/zm_monitor.cpp
+++ b/src/zm_monitor.cpp
@@ -1991,6 +1991,7 @@ bool Monitor::Analyse() {
                   // Write out starting packets, do not modify packetqueue it will garbage collect itself
                   while ( start_it != snap_it ) {
                     ZMPacket *p = packetqueue->get_packet(&start_it);
+                    if ( !p ) break;
                     event->AddPacket(p);
                     p->unlock();
                     start_it ++;