liblxqt-config-cursor: Don't check for null pointer before deleting it
liblxqt-config-cursor: Don't check for null pointer before deleting it

It's fine to delete a null pointer.

lxde/lxqt-config,lxde/lxqt-config,lxde/lxqt-config,stefonarch/lxqt-config,lxde/lxqt-config,stefonarch/lxqt-config,stefonarch/lxqt-config