fix declaration
fix declaration

superjudge/openvg,superjudge/openvg,superjudge/openvg,mayqueenRD/OpenVG_Rasbian_UI,chappyhome/openvg,chappyhome/openvg,chappyhome/openvg,superjudge/openvg,mayqueenRD/OpenVG_Rasbian_UI,mayqueenRD/OpenVG_Rasbian_UI,chappyhome/openvg