Merge pull request #12371 from unknownbrackets/thread-detach

Avoid thread.detach(), join when needed instead

UI/NativeApp.cpp

@@ -879,11 +879,12 @@ void NativeShutdownGraphics() {
 	winAudioBackend = nullptr;
 #endif
 
+	ShutdownWebServer();
+	UIBackgroundShutdown();
+
 	delete g_gameInfoCache;
 	g_gameInfoCache = nullptr;
 
-	UIBackgroundShutdown();
-
 	delete uiContext;
 	uiContext = nullptr;