warsow: add missing libX11

Grimmauld f7341106 a0bdc22e

+2
+2
pkgs/games/warsow/engine.nix
··· 13 libpng, 14 SDL2, 15 libGL, 16 openal, 17 zlib, 18 }: ··· 52 libjpeg 53 SDL2 54 libGL 55 openal 56 zlib 57 libpng
··· 13 libpng, 14 SDL2, 15 libGL, 16 + libX11, 17 openal, 18 zlib, 19 }: ··· 53 libjpeg 54 SDL2 55 libGL 56 + libX11 57 openal 58 zlib 59 libpng