Fix off-by-one error in monthly recurrence weekday combo box.
Fix off-by-one error in monthly recurrence weekday combo box.

svn path=/branches/KDE/3.5/kdepim/; revision=444060

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