host: pull pending upstream inclusion fix for ncurses-6.3

Without the fix build on ncurses-6.3 fails as:

display-main.c:59:9: error: format not a string literal and no format arguments [-Werror=format-security]
59 | wprintw(dump_win, str);
| ^~~~~~~

pkgs/tools/networking/horst/default.nix

···
-{lib, stdenv, fetchFromGitHub, pkg-config, ncurses, libnl }:
+{lib, stdenv, fetchFromGitHub, fetchpatch, pkg-config, ncurses, libnl }:
 
 stdenv.mkDerivation rec {
   pname = "horst";
···
     rev = "v${version}";
     sha256 = "140pyv6rlsh4c745w4b59pz3hrarr39qq3mz9z1lsd3avc12nx1a";
   };
+
+  patches = [
+    # Fix pending upstream inclusion for ncurses-6.3:
+    #  https://github.com/br101/horst/pull/110
+    (fetchpatch {
+      name = "ncurses-6.3.patch";
+      url = "https://github.com/br101/horst/commit/c9e9b6cc1f97edb9c53f3a67b43f3588f3ac6ea7.patch";
+      sha256 = "15pahbnql44d5zzxmkd5ky8bl3c3hh3lh5190wynd90jrrhf1a26";
+      # collides for context change, well apply this part in postPatch
+      excludes = [ "display-main.c" ];
+    })
+  ];
+  postPatch = ''
+    # Apply second part of ncurses-6.3.patch:
+    substituteInPlace display-main.c --replace 'wprintw(dump_win, str);' 'wprintw(dump_win, "%s", str);'
+  '';
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ ncurses libnl ];