Pull up material disposal to MeshBase.

Assets/Cryville/Crtr/Components/MeshBase.cs

@@ -1,4 +1,5 @@
 using System;
+using UnityEngine;
 
 namespace Cryville.Crtr.Components {
 	public abstract class MeshBase : SkinComponent {
@@ -7,6 +8,7 @@ namespace Cryville.Crtr.Components {
 		}
 
 		protected MeshWrapper mesh = new MeshWrapper();
+		protected Material[] materials;
 
 		short _zindex;
 		public short ZIndex {
@@ -22,9 +24,16 @@ namespace Cryville.Crtr.Components {
 		}
 		protected void UpdateZIndex() {
 			if (!mesh.Initialized) return;
-			foreach (var mat in mesh.Renderer.materials) {
+			foreach (var mat in materials) {
 				mat.renderQueue = _zindex;
 			}
 		}
+		protected override void OnDestroy() {
+			if (materials != null)
+				foreach (var mat in materials) {
+					Material.Destroy(mat);
+				}
+			mesh.Destroy();
+		}
 	}
 }