coverity#703963 Unchecked return value
coverity#703963 Unchecked return value

also avoid pointless double Guard

Change-Id: Ie7707fc3baf46f9363fdef6213df098123183ab9

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