fix mac build
fix mac build

after my commit e2080e7 "new compilerplugin returnbyref"

Change-Id: Iec1663507ddda009903c31aa3ceedfe5380c1962

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