Patch from Martin Koller to prevent a crash in the tooltip code (need to check for null pointer).
Patch from Martin Koller to prevent a crash in the tooltip code (need to check for null pointer).

CCMAIL: 69786-done@bugs.kde.org

svn path=/trunk/kdepim/; revision=276325

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