Doesn't crash when trying to show the header view while the article view was closed.
Doesn't crash when trying to show the header view while the article view was closed.

CCMAIL: 64830-done@bugs.kde.org

svn path=/trunk/kdepim/; revision=259960

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