naev: add freetype dependency

pkgs/games/naev/default.nix

···
 { fetchurl, stdenv, SDL, openal, SDL_mixer, libxml2, pkgconfig, libvorbis
-, libpng, mesa, makeWrapper, zlib }:
+, libpng, mesa, makeWrapper, zlib, freetype }:
 
 let
   pname = "naev";
···
     sha256 = "0gahi91lmpra0wvxsz49zwwb28q9w2v1s3y7r70252hq6v80kanb";
   };
 
-  buildInputs = [ SDL SDL_mixer openal libxml2 libvorbis libpng mesa zlib ];
+  buildInputs = [ SDL SDL_mixer openal libxml2 libvorbis libpng mesa zlib freetype ];
 
   nativeBuildInputs = [ pkgconfig makeWrapper ];