"To-be-closed" upvalue cleanup opportunity?

[Sergey Zakharchenko <doublef.mobile@...>]

Hello list,

I believe the 'tbc' field of UpVal:
https://github.com/lua/lua/blob/c954db39241a8b21d7b32b42b87a066b4708f969/lobject.h#L620

is unnecessary since the to-be-closed variable handling changes starting with
https://github.com/lua/lua/commit/4e47f81188d37e29027158b76271d02a781242e2 .

It's only referenced in newupval, which is never called with anything
but 0 for the value.

Best regards,

-- 
DoubleF