Fix crashes after detaching with uncleared event callbacks

include/visual/menu/GuiInterface.hpp

@@ -10,6 +10,7 @@ namespace gui
 {
 
 void init();
+void shutdown();
 void draw();
 bool handleSdlEvent(SDL_Event *event);
 

src/hack.cpp

@@ -17,6 +17,7 @@
 #include "hack.hpp"
 #include "common.hpp"
 #include "MiscTemporary.hpp"
+#include "menu/GuiInterface.hpp"
 #include <link.h>
 #include <pwd.h>
 
@@ -400,6 +401,10 @@ void hack::Shutdown()
     delete g_pLocalPlayer;
     delete g_pTeamRoundTimer;
     delete g_pPlayerResource;
+#if ENABLE_GUI
+    logging::Info("Shutting down GUI");
+    gui::shutdown();
+#endif
     if (!hack::game_shutdown)
     {
         logging::Info("Running shutdown handlers");

src/visual/EventLogging.cpp

@@ -9,6 +9,7 @@
 #include <colors.hpp>
 #include <init.hpp>
 #include "KeyValues.h"
+#include "HookTools.hpp"
 
 namespace event_logging
 {
@@ -253,7 +254,11 @@ public:
 
 static LoggingEventListener event_listener{};
 
-InitRoutine init([]() { g_IGameEventManager->AddListener(&event_listener, false); });
+InitRoutine init([]() {
+    g_IGameEventManager->AddListener(&event_listener, false);
+    EC::Register(
+        EC::Shutdown, []() { g_IGameEventManager->RemoveListener(&event_listener); }, "shutdown_eventlogger");
+});
 
 bool isEnabled()
 {

src/visual/menu/GuiInterface.cpp

@@ -146,6 +146,11 @@ void gui::init()
     init_done = true;
 }
 
+void gui::shutdown()
+{
+    g_IGameEventManager->RemoveListener(&listener);
+}
+
 void gui::draw()
 {
     if (!init_done)