Backport r835319 by tmcguire to the 4.1 branch:
Backport r835319 by tmcguire to the 4.1 branch:

Don't crash when checking mail and the POP filter dialog is not shown
because all POP filters already match.
CCBUG: 167008

svn path=/branches/KDE/4.1/kdepim/; revision=835466

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