fix clang static analyzer
fix clang static analyzer

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