fbx2gltf vertex index hash bugfix
fbx2gltf vertex index hash bugfix

JDReutt/qtek,uooo/qtek,zhangwei001/qtek,zhangwei001/qtek,pissang/claygl,pissang/claygl,pissang/qtek,JDReutt/qtek,zhangwei001/qtek,uooo/qtek,pissang/qtek,uooo/qtek,pissang/claygl,JDReutt/qtek