#480 [lxsession] 0.5.0 lxsession-edit: Fix segfault on exit when kf is not set.

[Balló György]

Currently lxsession-edit segfaults on exit outside the LXDE session, because the kf variable is uninitialized. This patch fixes the problem.

[gilir]

Thanks, looks good. I can't apply it using git am (fail to recognize the patch format), but I'll commit it with proper credit on the commit message.