Code review comment for lp:~alexlauni/libunity/blacklist-crash-1029949

Actually wait, I tried running the test (compiled with --enable-integration-tests=yes) ./test-mpris-backend and it seems to crash somehow. When I comment out the this.player.menu_player.is_blacklisted = true; line the test goes on fine. So I think maybe the test is a bit broken somewhere.