readonly struct -> readonly ref struct

src/DotRecast.Core/RcScopedTimer.cs

@@ -2,7 +2,7 @@
 
 namespace DotRecast.Core
 {
-    public readonly struct RcScopedTimer : IDisposable
+    public readonly ref struct RcScopedTimer
     {
         private readonly RcContext _context;
         private readonly RcTimerLabel _label;

src/DotRecast.Core/RcThrowHelper.cs

@@ -14,13 +14,20 @@ public static void ThrowExceptionIfIndexOutOfRange(int index, int size)
                 throw new IndexOutOfRangeException($"Index {index} is out of range - size({size})");
             }
         }
-        
+
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void ThrowArgumentOutOfRangeException(string argument)
         {
             throw new ArgumentOutOfRangeException(argument);
         }
-
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static void ThrowNullReferenceException(string argument)
+        {
+            throw new NullReferenceException(argument);
+        }
+
+
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void StackOverflow()
         {
@@ -34,15 +41,13 @@ public static void StackOverflow()
             var array_8_512_1 = RcStackArray8<RcStackArray512<float>>.Empty; // 8 * 512 = 4196
             var array_4_256_1 = RcStackArray4<RcStackArray256<float>>.Empty; // 4 * 256 = 1024
             var array_4_64_1 = RcStackArray4<RcStackArray64<float>>.Empty; // 4 * 64 = 256
-        
+
             //
             var array_2_8_1 = RcStackArray2<RcStackArray8<float>>.Empty; // 2 * 8 = 16
             var array_2_4_1 = RcStackArray2<RcStackArray2<float>>.Empty; // 2 * 2 = 4
-            
+
             float f1 = 0.0f; // 1
             //float f2 = 0.0f; // my system stack overflow!
         }
-
-
     }
 }

src/DotRecast.Detour.Crowd/DtCrowdScopedTimer.cs

@@ -2,7 +2,7 @@
 
 namespace DotRecast.Detour.Crowd
 {
-    internal readonly struct DtCrowdScopedTimer : IDisposable
+    internal readonly ref struct DtCrowdScopedTimer
     {
         private readonly DtCrowdTimerLabel _label;
         private readonly DtCrowdTelemetry _telemetry;