fix double deletion (CID 2490)
fix double deletion (CID 2490)

svn path=/trunk/KDE/kdepim/kmailcvt/; revision=574436

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