do not crash on destruction (happened with --silent)
do not crash on destruction (happened with --silent)

svn path=/branches/work/kdab-post-4.0/kdepim/; revision=719584

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi