Save one QString->QCString->QString round trip
Save one QString->QCString->QString round trip

svn path=/trunk/kdenetwork/kmail/; revision=160625

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