src/lib/quota.c: don't check for dq_param == NULL

There is no need to check for dq_param == NULL here, it can
never be NULL.

Also, the return code of -1 is bad because these functions are
expected to return codes suitable as vzctl exit codes.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
1 file changed