Improve GC

src/Bones/bone.ts

@@ -242,9 +242,9 @@ export class Bone extends Node {
      */
     public returnToRest(): void {
         if (this._skeleton._numBonesWithLinkedTransformNode > 0) {
-            this.updateMatrix(this._restPose.clone(), false, false);
+            this.updateMatrix(this._restPose, false, false);
         } else {
-            this.updateMatrix(this._restPose.clone(), false, true);
+            this.updateMatrix(this._restPose, false, true);
         }
     }