CommonHostInterface: Fix crash on shutdown when using save state selector

src/core/host_interface.cpp

@@ -48,7 +48,11 @@ bool HostInterface::Initialize()
   return true;
 }
 
-void HostInterface::Shutdown() {}
+void HostInterface::Shutdown()
+{
+  if (!System::IsShutdown())
+    System::Shutdown();
+}
 
 void HostInterface::CreateAudioStream()
 {

src/frontend-common/common_host_interface.cpp

@@ -87,18 +87,10 @@ void CommonHostInterface::Shutdown()
 {
   HostInterface::Shutdown();
 
-  // this has gpu objects so it has to come first
-  m_save_state_selector_ui.reset();
-
 #ifdef WITH_DISCORD_PRESENCE
   ShutdownDiscordPresence();
 #endif
 
-  System::Shutdown();
-  m_audio_stream.reset();
-  if (m_display)
-    ReleaseHostDisplay();
-
   if (m_controller_interface)
   {
     m_controller_interface->Shutdown();
@@ -177,6 +169,7 @@ void CommonHostInterface::PauseSystem(bool paused)
 void CommonHostInterface::DestroySystem()
 {
   SetTimerResolutionIncreased(false);
+  m_save_state_selector_ui->Close();
 
   HostInterface::DestroySystem();
 }

src/frontend-common/save_state_selector_ui.cpp

@@ -31,6 +31,7 @@ void SaveStateSelectorUI::Close()
     return;
 
   m_open = false;
+  ClearList();
 }
 
 void SaveStateSelectorUI::ClearList()