From 284fe52b5f9da0c02d49da6849a1d710c477894b Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Wed, 17 Mar 2021 12:57:45 -0400
Subject: [PATCH] fix double stop/free of decoder and analysis threads

---
 src/zm_monitor.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/zm_monitor.cpp b/src/zm_monitor.cpp
index 38a2814a3..b8d2fa4fc 100644
--- a/src/zm_monitor.cpp
+++ b/src/zm_monitor.cpp
@@ -3180,9 +3180,11 @@ int Monitor::Close() {
   packetqueue.clear();
   if (decoder) {
     delete decoder;
+    decoder = nullptr;
   }
   if (analysis_thread) {
     delete analysis_thread;
+    analysis_thread = nullptr;
   }
   std::lock_guard<std::mutex> lck(event_mutex);
   if (event) {