safety - don't crash if the addressee list is empty
safety - don't crash if the addressee list is empty

svn path=/trunk/KDE/kdepim/; revision=840344

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