4_4 done

Signed-off-by: aLekSer <gdocse@gmail.com>
mem leak avoided

Signed-off-by: aLekSer <gdocse@gmail.com>
unused members

Signed-off-by: aLekSer <gdocse@gmail.com>
pvs advices

Signed-off-by: aLekSer <gdocse@gmail.com>