use faster / safer memset to clear out token_t
use faster / safer memset to clear out token_t

ppliu1979/libinjection,fengjian/libinjection,dijkstracula/libinjection,dijkstracula/libinjection,fengjian/libinjection,ppliu1979/libinjection,fengjian/libinjection,fengjian/libinjection,ppliu1979/libinjection,dijkstracula/libinjection,dijkstracula/libinjection,ppliu1979/libinjection,dijkstracula/libinjection,fengjian/libinjection,fengjian/libinjection,fengjian/libinjection,dijkstracula/libinjection,ppliu1979/libinjection,ppliu1979/libinjection