Backport Fix minor leak (it cleans when we close composer)
Backport
Fix minor leak (it cleans when we close composer)

svn path=/branches/KDE/4.2/kdepim/; revision=951460

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