coverity#735892 Unchecked dynamic_cast
coverity#735892 Unchecked dynamic_cast

Change-Id: I0624dd7d50cc82ddfe76ce5d8219b2fa1c10f002

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