Fix crash when opening a just added attachment that got QP encoded and contained a CRLF linefeed.
Fix crash when opening a just added attachment that got QP encoded and
contained a CRLF linefeed.

Kolab issue 2947

svn path=/branches/kdepim/enterprise/kdepim/; revision=875426

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