refactor: small optimization to Fiber.Ivar.{read,fill}#39

rgrinberg wants to merge 1 commit intomainocaml-dune/fiber:mainfrom

ps/rr/refactor__small_optimization_to_fiber_ivar__read_fill_ocaml-dune/fiber:ps/rr/refactor__small_optimization_to_fiber_ivar__read_fill_Copy head branch name to clipboard