Fixed that proxy_user may be used uninitialized.
@ -3007,7 +3007,7 @@ void Security_context::init()
{
host= user= ip= external_user= 0;
host_or_ip= "connecting host";
priv_user[0]= priv_host[0]= '\0';
priv_user[0]= priv_host[0]= proxy_user[0]= '\0';
master_access= 0;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
db_access= NO_ACCESS;