fix KDE file dialog setting checkboxes to true
fix KDE file dialog setting checkboxes to true

No idea how long this has been broken, or if it ever worked,
but inserting a picture sets the 'link' and 'preview' checkboxes to true
for the next time (as getValue() returns void*, which gets silently
converted to bool *sigh*).

Change-Id: I6af0e09ac5e475fc9ff04cd7f937af0bc7aeea77

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core