ip: Fix rx_otherhost_dropped support

ip: Fix rx_otherhost_dropped support

The commit cited below added a new column to print_stats64(). However it
then updated only one size_columns() call site, neglecting to update the
remaining three. As a result, in those not-updated invocations,
size_columns() now accesses a vararg argument that is not being passed,
which is undefined behavior.

Fixes: cebf67a35d8a ("show rx_otherehost_dropped stat in ip link show")
CC: Tariq Toukan <tariqt@nvidia.com>
CC: Itay Aveksis <itayav@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>