removed nonsense incRef() in operator=()
removed nonsense incRef() in operator=()

Change-Id: I62e330ff47a60cc0acaf6deb3cd1011c7deb3f45

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