Code review comment for lp:~widelands-dev/widelands/list-directories-in-cpp

I get this on a slow laptop, so maybe this machine dependent. Just curious that i didn't get this with trunk.

Toni, can you compare loading the save game with trunk, so we can see if this is really 10 sec. faster? Comparing the time for the editor would also be nice.

Anyway i noticed no other issues with this branch :-) So please can someone make a code review?