message: Java gltfio: fix use-after-free error in shutdown.
  Fixes
diff: @@ -107,8 +107,8 @@ public class AssetLoader {
  * Frees all memory consumed by the native <code>AssetLoader</code> and its material cache.
  */
  public void destroy() {
  - nDestroyAssetLoader(mNativeObject);
  mMaterialCache.destroyMaterials();
  + nDestroyAssetLoader(mNativeObject);
  mNativeObject = 0;
  }
  