Fix deadlock when no messages need to be rescued (kolab issue 1303).
Fix deadlock when no messages need to be rescued (kolab issue 1303).

svn path=/branches/kdepim/enterprise/kdepim/; revision=689858

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