tree b8ac077898f10eda7a41622d193d539784bc0364
parent 167c4519f98537dbe97eee7a13ea47ecda0fe407
author Roman Elizarov <elizarov@gmail.com> 1537819211 +0300
committer Roman Elizarov <elizarov@gmail.com> 1537819211 +0300

Optimize Empty -> Failing state transition

We can avoid promotion of Empty to NodeList, but create new empty
NodeList and capture it in the new Failing instance