Cleanup the g_PortManager shutdown process

Following up comment by @anr2me in #17744, to be merged before that one.

Core/Util/PortManager.cpp

@@ -54,16 +54,16 @@ PortManager::PortManager():
 	m_InitState(UPNP_INITSTATE_NONE),
 	m_LocalPort(UPNP_LOCAL_PORT_ANY),
 	m_leaseDuration("43200") {
-	// Since WSAStartup can be used multiple times it should be safe to do this right?
-	net::Init();
 }
 
 PortManager::~PortManager() {
 	// FIXME: On Windows it seems using any UPnP functions in this destructor that gets triggered when exiting PPSSPP will resulting to UPNPCOMMAND_HTTP_ERROR due to early WSACleanup (miniupnpc was getting WSANOTINITIALISED internally)
+}
+
+void PortManager::Shutdown() {
 	Clear();
 	Restore();
 	Terminate();
-	net::Shutdown();
 }
 
 void PortManager::Terminate() {
@@ -502,9 +502,7 @@ int upnpService(const unsigned int timeout)
 
 	// Cleaning up regardless of g_Config.bEnableUPnP to prevent lingering open ports on the router
 	if (g_PortManager.GetInitState() == UPNP_INITSTATE_DONE) {
-		g_PortManager.Clear();
-		g_PortManager.Restore();
-		g_PortManager.Terminate();
+		g_PortManager.Shutdown();
 	}
 
 	// Should we ingore any leftover UPnP requests? instead of processing it on the next game start

Core/Util/PortManager.h

@@ -83,9 +83,6 @@ class PortManager {
 	// timeout: milliseconds to wait for a router to respond (default = 2000 ms)
 	bool Initialize(const unsigned int timeout = 2000);
 
-	// Uninitialize/Reset the state
-	void Terminate();
-
 	// Get UPnP Initialization status
 	int GetInitState();
 
@@ -95,16 +92,22 @@ class PortManager {
 	// Remove a port mapping (external port)
 	bool Remove(const char* protocol, unsigned short port);
 
+	// Call on exit. Does a full shutdown.
+	void Shutdown();
+
+private:
+	// Retrieves port lists mapped by PPSSPP for current LAN IP & other's applications
+	bool RefreshPortList();
+
 	// Removes any lingering mapped ports created by PPSSPP (including from previous crashes)
 	bool Clear();
 
 	// Restore ports mapped by others that were taken by PPSSPP, better used after Clear()
 	bool Restore();
 
-	// Retrieves port lists mapped by PPSSPP for current LAN IP & other's applications
-	bool RefreshPortList();
+	// Uninitialize/Reset the state
+	void Terminate();
 
-protected:
 	struct UPNPUrls* urls = NULL;
 	struct IGDdatas* datas = NULL;
 

UI/NativeApp.cpp

@@ -103,6 +103,7 @@
 #include "Core/HLE/proAdhoc.h"
 #include "Core/HW/MemoryStick.h"
 #include "Core/Util/GameManager.h"
+#include "Core/Util/PortManager.h"
 #include "Core/Util/AudioFormat.h"
 #include "Core/WebServer.h"
 #include "Core/TiltEventProcessor.h"
@@ -1409,6 +1410,8 @@ void NativeShutdown() {
 	System_ExitApp();
 #endif
 
+	g_PortManager.Shutdown();
+
 	net::Shutdown();
 
 	g_Discord.Shutdown();