possible fix for fdo#43312
possible fix for fdo#43312

did not test that yet, should be quite safe to avoid a null pointer
exception but the selected area might need some change to allow tests to
pass

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