coverity#1157794 Unchecked dynamic_cast
coverity#1157794 Unchecked dynamic_cast

Change-Id: Idda6698a0fc53c1b59b2a7d2e88e24dac55a0fbd

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