kohei04: #i108373# Initialize StatusBar::mnItemsWidth before it gets used.
kohei04: #i108373# Initialize StatusBar::mnItemsWidth before it gets used.

valgrind reports that in class StatusBar, mnItemsWidth is used uninitialized
for branching in SetItemText().
JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core