Resource leak patch

Sources/Sandbox.Game/Engine/Voxels/MyVoxelGeometry.cs

@@ -1,13 +1,8 @@
-
-using Sandbox.Common;
-using Sandbox.Engine.Physics;
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.Threading;
 using VRage;
 using VRage.Collections;
-using VRage;
 using VRage.Utils;
 using VRage.Voxels;
 using VRageMath;
@@ -18,7 +13,7 @@
 
 namespace Sandbox.Engine.Voxels
 {
-    public partial class MyVoxelGeometry
+    public partial class MyVoxelGeometry : IDisposable
     {
         private static List<Vector3I> m_sweepResultCache = new List<Vector3I>();
         private static List<int> m_overlapElementCache = new List<int>();
@@ -446,5 +441,10 @@ private void SetEmpty(ref MyCellCoord cell, bool value)
 
             Debug.Assert(IsEmpty(ref cell) == value);
         }
+
+        public void Dispose()
+        {
+            m_lock.Dispose();
+        }
     }
 }