add empty() in EpollEvent.
add empty() in EpollEvent.

berkowski/nix,carllerche/nix-rust,posborne/rust-nix,geofft/nix-rust,xd009642/nix,Susurrus/nix,geofft/nix-rust,carllerche/nix-rust,Susurrus/nix,MarkusJais/nix-rust,posborne/rust-nix,xd009642/nix,asomers/nix,Susurrus/nix,xd009642/nix,MarkusJais/nix-rust,kamalmarhubi/nix-rust,berkowski/nix,nix-rust/nix,asomers/nix,kamalmarhubi/nix-rust,berkowski/nix,kamalmarhubi/nix-rust,MarkusJais/nix-rust,posborne/rust-nix,nix-rust/nix,carllerche/nix-rust,geofft/nix-rust