coverity#704086 Unchecked return value
coverity#704086 Unchecked return value

following check is sufficient

Change-Id: Ibcf53293c8e862ab823ed422d1a7a59dcc0977cf

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