v2: don't leak FILE

CID 73423 (#1 of 1): Resource leak (RESOURCE_LEAK)
15. leaked_storage: Variable f going out of scope leaks the storage it points to.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>