Forward port of fix for Kolab issue 1839 (crash in KNotes kontact plugin)
Forward port of fix for Kolab issue 1839 (crash in KNotes kontact plugin)

svn path=/trunk/KDE/kdepim/kontact/plugins/; revision=694446

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