Fix regression in cookies.rs due to pending stabilization of Iterator::flatten
This fixes a regression (soon in nightly) due to the pending stabilization of Iterator::flatten. See https://github.com/rust-lang/rust/pull/51511 for details.
This fixes a regression (soon in nightly) due to the pending stabilization of Iterator::flatten. See https://github.com/rust-lang/rust/pull/51511 for details.