coverity#1242370: Unchecked return value
coverity#1242370: Unchecked return value

Change-Id: I11d80ddea4a38ce69ad7076af6da0bf173bd8551

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