make KMail compile again (missing header include)
make KMail compile again (missing header include)

svn path=/trunk/kdenetwork/kmail/; revision=122837

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