unbound: don't run tests when cross-compiling
unbound: don't run tests when cross-compiling

stdenv.mkDerivation will automatically set doCheck to false when
cross-compiling (which is why the default checkPhase doesn't happen).

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs