x.extensions.KHR_materials_unlit != null always true

[JalalJaberi]

In UniGLTF\Scripts\IO\MaterialImporter, x.extensions.KHR_materials_unlit != null is always true event when there is no KHR_materials_unlit key presented in gltf material json data.

[JalalJaberi]

It seems affected by Unity JSONUtility that initialize non-presented variables (in deserializing) with default values. Cause problematic results.

[yutopp]

Hi. Thank you for your reporting. I'll investigate the probrem.

[yutopp]

It will be safe when extensions is null on native Windows environments, but it may causes unexpected behaviour when running on UWP environments or extensions is {}.

It seems time has come to replace the JSON deserializer from JSONUtility (But it's a heavy task...).

[PoChang007]

Sorry for the late reply. This issue has been fixed. Please try again with the latest version. Thanks!