java frontend: fixed g++4.7 crash.
java frontend: fixed g++4.7 crash.

rootfs/Rusthon,kustomzone/Rusthon,rootfs/Rusthon,secureosv/pythia,kustomzone/Rusthon,kustomzone/Rusthon,kustomzone/Rusthon,pombredanne/Rusthon,rusthon/Rusthon,rusthon/Rusthon,tempbottle/Rusthon,rusthon/Rusthon,secureosv/pythia,secureosv/pythia,rootfs/Rusthon,tempbottle/Rusthon,pombredanne/Rusthon,rusthon/Rusthon,rootfs/Rusthon,pombredanne/Rusthon,kustomzone/Rusthon,pombredanne/Rusthon,tempbottle/Rusthon,rootfs/Rusthon,pombredanne/Rusthon,tempbottle/Rusthon,secureosv/pythia,secureosv/pythia,rusthon/Rusthon,tempbottle/Rusthon