Do not crash if no plugin is active when editing toolbars...
Do not crash if no plugin is active when editing toolbars...

svn path=/branches/kdepim/enterprise/kdepim/; revision=675087

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