Fix memory leak from attachments (attempt number 2)
Fix memory leak from attachments (attempt number 2)

svn path=/trunk/kdepim/; revision=163009

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