fixed out of bounds vector access
fixed out of bounds vector access

in ScColumn::FindNextVisibleRowWithContent() if starting from the
position all including the last present cell of a column are blank

Change-Id: I0270331444f1707b6ad413f6127ae4c2cf0b1984

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