Fix BGEffectHandler destruction

include/hyperion/BGEffectHandler.h

@@ -43,6 +43,16 @@ public:
 		handleSettingsUpdate(settings::BGEFFECT, _hyperion->getSetting(settings::BGEFFECT));
 	}
 
+	///
+	/// @brief Disconnect from connected signals
+	/// Disconnect should be done before other priorities invoke methods during shutdown
+	///
+	void disconnect()
+	{
+		QObject::disconnect(_prioMuxer, &PriorityMuxer::prioritiesChanged, nullptr, nullptr);
+		QObject::disconnect(_hyperion, nullptr, nullptr, nullptr);
+	}
+
 	///
 	/// @brief Check, if background effect processing is enabled.
 	/// @return True, background effect processing is enabled.

libsrc/hyperion/Hyperion.cpp

@@ -200,13 +200,16 @@ void Hyperion::stop()
 
 void Hyperion::freeObjects()
 {
-	//delete Background effect first that it does not kick in when other priorities are stopped
+	//Disconnect Background effect first that it does not kick in when other priorities are stopped
-	delete _BGEffectHandler;
+	_BGEffectHandler->disconnect();
 
 	//Remove all priorities to switch off all leds
 	clear(-1,true);
 
 	// delete components on exit of hyperion core
+
+	delete _BGEffectHandler;
+
 #if defined(ENABLE_BOBLIGHT_SERVER)
 	delete _boblightServer;
 #endif