no need to set net->vio to zero in mysql_real_connect
no need to set net->vio to zero in mysql_real_connect

because it is zero always in this place as we have check for this above
which checks that net->vio isn't 0 and exit.

natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2