miniupnpc API version 14 changed the upnpDiscover functions, adding an argument for TTL (should default to 2)

this enables support for that should the build system have that specific version installed, the miniupnpc bundled in the project is unchanged

Source/Core/Core/NetPlayServer.cpp

@@ -904,7 +904,11 @@ bool NetPlayServer::initUPnP()
 	memset(&m_upnp_data, 0, sizeof(IGDdatas));
 
 	// Find all UPnP devices
+#ifdef UPNPDISCOVER_HAS_TTL
+	UPNPDev *devlist = upnpDiscover(2000, nullptr, nullptr, 0, 0, 2, &upnperror);
+#else
 	UPNPDev *devlist = upnpDiscover(2000, nullptr, nullptr, 0, 0, &upnperror);
+#endif
 	if (!devlist)
 	{
 		WARN_LOG(NETPLAY, "An error occured trying to discover UPnP devices.");