Argl. Revert "check dynamic_cast for 0" change to make KMail compile again.
Argl. Revert "check dynamic_cast for 0" change to make KMail compile again.

svn path=/trunk/kdepim/; revision=228433

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