Fix BitMessage shutdown.

src/Components/Modules/BitMessage.cpp

@@ -187,15 +187,7 @@ namespace Components
 	{
 		BitMessage::Save();
 
-		// We have to do that in another thread, as sometimes the terminating thread already holds the mutex lock...
+		delete BitMessage::BMClient;
-#ifndef DEBUG
-		std::thread([&] ()
-		{
-#endif
-			delete BitMessage::BMClient;
-#ifndef DEBUG
-		}).join();
-#endif
 
 		BitMessage::BMClient = nullptr;
 	}