coverity#1202763: Unchecked return value
coverity#1202763: Unchecked return value

Change-Id: I82d098f269bae2f4deb7e997b03e4267e6a86bea

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