From bbc154efe2e366012012920f737ebf7183b45e15 Mon Sep 17 00:00:00 2001
From: Tim Zeuner <zeunerti74726@th-nuernberg.de>
Date: Sun, 15 Jan 2023 22:36:27 +0100
Subject: [PATCH] Bugfix when calling destructor without a running thread

---
 AutonomousMode/lfr.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/AutonomousMode/lfr.cpp b/AutonomousMode/lfr.cpp
index c288716..89e1d7f 100644
--- a/AutonomousMode/lfr.cpp
+++ b/AutonomousMode/lfr.cpp
@@ -19,7 +19,10 @@ LFR::LFR(int videoHeight, int videoWidth, int thresholdBinary, int gaussKernelSi
 LFR::~LFR()
 {
     endLoop();
-    thread->join();
+    if(thread)
+    {
+        thread->join();
+    }
 }
 
 void LFR::removeListener(LFR::ListenerKey key)