Fix disposing of IPC sessions server at emulation stop (#2334)

Ryujinx.HLE/HOS/Services/Spl/IRandomInterface.cs

@@ -4,10 +4,12 @@ using System.Security.Cryptography;
 namespace Ryujinx.HLE.HOS.Services.Spl
 {
     [Service("csrng")]
-    class IRandomInterface : IpcService, IDisposable
+    class IRandomInterface : DisposableIpcService
     {
         private RNGCryptoServiceProvider _rng;
 
+        private object _lock = new object();
+
         public IRandomInterface(ServiceCtx context)
         {
             _rng = new RNGCryptoServiceProvider();
@@ -26,14 +28,9 @@ namespace Ryujinx.HLE.HOS.Services.Spl
             return ResultCode.Success;
         }
 
-        public void Dispose()
+        protected override void Dispose(bool isDisposing)
         {
-            Dispose(true);
-        }
-
-        protected virtual void Dispose(bool disposing)
-        {
-            if (disposing)
+            if (isDisposing)
             {
                 _rng.Dispose();
             }