gnused: apply gnulib.passthru.longdouble-redirect-patch

pkgs/tools/text/gnused/default.nix

···
-{ lib, stdenv, fetchurl, perl }:
+{ lib, stdenv, fetchurl, perl
+, gnulib }:
 
 stdenv.mkDerivation rec {
   pname = "gnused";
···
   outputs = [ "out" "info" ];
 
   nativeBuildInputs = [ perl ];
+
+  patches = [
+    # this change to gnused's vendored copy of gnulib is already
+    # merged upstream; we can drop this patch on the next version bump
+    gnulib.passthru.longdouble-redirect-patch
+  ];
+
   preConfigure = "patchShebangs ./build-aux/help2man";
 
   # Prevents attempts of running 'help2man' on cross-built binaries.