Fix a crash when the imap headers are downloaded/generated on startup
Fix a crash when the imap headers are downloaded/generated on startup

svn path=/trunk/kdepim/; revision=230556

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