Don't crash when the result returned by gpgme is 0.
Don't crash when the result returned by gpgme is 0.

svn path=/branches/kdepim/enterprise/kdepim/; revision=703752

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