SubMeshs are now valid even when not animated

Former-commit-id: 5bd6289d30f4f6ffa1fcaf8d946aa9aba9cf7131

include/Nazara/Utility/SkeletalMesh.hpp

@@ -35,6 +35,8 @@ class NAZARA_API NzSkeletalMesh final : public NzSubMesh
 		bool Create(NzVertexBuffer* vertexBuffer, unsigned int weightCount);
 		void Destroy();
 
+		void Finish();
+
 		const NzAxisAlignedBox& GetAABB() const;
 		nzAnimationType GetAnimationType() const final;
 		void* GetBindPoseBuffer();