GLTFLoader: check if material.extra is defined before assign it

1d4614cf · Nikolay Safin · 65dde621 · 1d4614cf
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examples/js/loaders/GLTFLoader.js examples/js/loaders/GLTFLoader.js +1 -1

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--- a/examples/js/loaders/GLTFLoader.js
+++ b/examples/js/loaders/GLTFLoader.js
@@ -1669,7 +1669,7 @@ THREE.GLTFLoader = ( function () {
 				// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#materialnormaltexture
 				_material.normalScale.x = -1;

-				_material.userData = material.extras;
+				if ( material.extras ) _material.userData = material.extras;

 				return _material;