Make sure that WiimoteReal is really shutdown on app exit. Particulary

ensure that the wiimote scanning thread is joined.  This fixes a crash
on shutdown if scanning has been initiated.

Source/Core/Core/Src/HW/Wiimote.cpp

@@ -32,7 +32,7 @@ void Shutdown()
 		delete *i;
 	g_plugin.controllers.clear();
 
-	WiimoteReal::Shutdown();
+	WiimoteReal::Stop();
 
 	g_controller_interface.Shutdown();
 }

Source/Core/Core/Src/HW/Wiimote.h

@@ -54,6 +54,7 @@ namespace WiimoteReal
 {
 
 void Initialize(bool wait = false);
+void Stop();
 void Shutdown();
 void Resume();
 void Pause();

Source/Core/Core/Src/HW/WiimoteReal/WiimoteReal.cpp

@@ -570,15 +570,15 @@ void Initialize(bool wait)
 	g_real_wiimotes_initialized = true;
 }
 
-void Shutdown(void)
+void Stop(void)
 {
 	for (unsigned int i = 0; i < MAX_BBMOTES; ++i)
 		if (g_wiimotes[i] && g_wiimotes[i]->IsConnected())
 			g_wiimotes[i]->EmuStop();
+}
 
-	// WiimoteReal is shutdown on app exit
-	return;
-
+void Shutdown(void)
+{
 	g_wiimote_scanner.StopScanning();
 
 	std::lock_guard<std::recursive_mutex> lk(g_refresh_lock);
@@ -589,9 +589,6 @@ void Shutdown(void)
 	NOTICE_LOG(WIIMOTE, "WiimoteReal::Shutdown");
 
 	g_real_wiimotes_initialized = false;
-
-	for (unsigned int i = 0; i < MAX_BBMOTES; ++i)
-		HandleWiimoteDisconnect(i);
 }
 
 void Resume()