Bugfix for internal AEgypten bug #1059: Do not crash when clicking on an "encrypted data" entry in the MIME tree viewer.  This is 1st part of the bugfix resolving only the ugly crash, additional bugfix is pending (khz) to avoid producing multiple entries in the MIME tree viewer when "encrypted data" entry is clicked repeatedly.
Bugfix for internal AEgypten bug #1059: Do not crash when clicking on an "encrypted data" entry in the MIME tree viewer.  This is 1st part of the bugfix resolving only the ugly crash, additional bugfix is pending (khz) to avoid producing multiple entries in the MIME tree viewer when "encrypted data" entry is clicked repeatedly.

svn path=/trunk/kdenetwork/kmail/; revision=157822

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