Fix crash when clicking the new action in a plugin which does not have a new action.
Fix crash when clicking the new action in a plugin which does not have a new action.

svn path=/trunk/KDE/kdepim/kontact/src/; revision=713222

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