Migrate to .NET 9 (#198)

src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/LdnMitm/LanDiscovery.cs

@@ -29,7 +29,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator.LdnMitm
         private ILdnTcpSocket _tcp;
         private LdnProxyUdpServer _udp, _udp2;
         private readonly List<LdnProxyTcpSession> _stations = new();
-        private readonly object _lock = new();
+        private readonly Lock _lock = new();
 
         private readonly AutoResetEvent _apConnected = new(false);
 

src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/LdnMitm/Proxy/LdnProxyUdpServer.cs

@@ -18,7 +18,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator.LdnMitm.Proxy
         private byte[] _buffer;
         private int _bufferEnd;
 
-        private readonly object _scanLock = new();
+        private readonly Lock _scanLock = new();
 
         private Dictionary<ulong, NetworkInfo> _scanResultsLast = new();
         private Dictionary<ulong, NetworkInfo> _scanResults = new();

src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/LdnRyu/NetworkTimeout.cs

@@ -10,7 +10,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator.LdnRyu
         private readonly Action _timeoutCallback;
         private CancellationTokenSource _cancel;
 
-        private readonly object _lock = new object();
+        private readonly Lock _lock = new();
 
         public NetworkTimeout(int idleTimeout, Action timeoutCallback)
         {

src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/LdnRyu/Proxy/EphemeralPortPool.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Threading;
 
 namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator.LdnRyu.Proxy
 {
@@ -8,7 +9,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator.LdnRyu.Proxy
 
         private readonly List<ushort> _ephemeralPorts = new List<ushort>();
 
-        private readonly object _lock = new object();
+        private readonly Lock _lock = new();
 
         public ushort Get()
         {