Fix a small memory leak.
Fix a small memory leak.

svn path=/trunk/kdenetwork/kmail/; revision=111125

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