Work around what appears to be a QListView bug (well it's pretty damn certain) when there are multiple items with exactly the same sorting key.
Work around what appears to be a QListView bug (well it's pretty damn certain) when there are multiple items with exactly the same sorting key.

svn path=/trunk/kdenetwork/kmail/; revision=48627

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