crrcsim: build with gcc6

pkgs/games/crrcsim/default.nix

···
     mesa SDL SDL_mixer plib libjpeg
   ];
 
+  patches = [
+    ./gcc6.patch
+  ];
+
   meta = {
     description = "A model-airplane flight simulator";
     maintainers = with stdenv.lib.maintainers; [ raskin the-kenny ];

pkgs/games/crrcsim/gcc6.patch

···
+diff --git c/src/mod_video/crrc_animation.cpp i/src/mod_video/crrc_animation.cpp
+index ee7d7f4..855b106 100644
+--- c/src/mod_video/crrc_animation.cpp
++++ i/src/mod_video/crrc_animation.cpp
+@@ -84,7 +84,7 @@ void createAnimation(SimpleXMLTransfer *animation, ssgEntity* model)
+       else
+       {
+         std::cerr << "createAnimation: unknown animation type \'"
+-                  << type << "\'" << std::cerr;
++                  << type << "\'" << std::endl;
+       }
+       
+       if (anim != NULL)