Code review comment for lp:~widelands-dev/widelands/graphic_resetting

Ok, the cuplrit seems to be the truncating in helper.cc::random_string()

    buffer[nlen] = '\0';

Afterwards the SIGTRAP occurs at some point when boost tries to delete the buffer.
I've committed a small change which fixes the code at least for my system.
Perhaps using boost:UUID could replace the manual string generation?

Now this trunk allows me to switch the graphic mode ingame, but only before i've run a game. If I go back from a game to the main menu and switch the graphics mode widelands still quits.