snuck in sign-extension bug just before last commit >.<
snuck in sign-extension bug just before last commit >.<

8l/rsp,mupen64plus/mupen64plus-rsp-cxd4,mupen64plus/mupen64plus-rsp-cxd4,8l/rsp,mupen64plus/mupen64plus-rsp-cxd4,8l/rsp