Don't take ages, when switching to the last unread message and that is far away.
Don't take ages, when switching to the last unread message and that is far
away.

svn path=/trunk/kdenetwork/kmail/; revision=128596

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