Avoid a string copy when sending mails.
Avoid a string copy when sending mails.

svn path=/trunk/kdepim/; revision=370174

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