Correctly skip rtsock_l3 test when if_epair is not available

[arichardson]

Summary

This logic was accidentally changed in 67f2f67fc8ce8484066e95dabac5af892888fca1

Reported By: olivier
X-MFC-With: 67f2f67fc8ce8484066e95dabac5af892888fca1
Fixes: 67f2f67fc8ce ("Update rtsock_l3 test after 2fe5a79425c7")

Test Plan

Untested since I don't have a kernel without if_epair, but should hopefully work.

[kp]

Skips correctly if if_epair.ko cannot be loaded (tested with sudo rm /boot/kernel/if_epair.ko).

[arichardson]

In D29944#671905, @kp wrote:

Skips correctly if if_epair.ko cannot be loaded (tested with sudo rm /boot/kernel/if_epair.ko).

Ah yes, I could have just done that :) Thanks for testing.

[olivier]

Thanks!
it fixes the regression:

# grep 'rtsock_l3.*skipped: module if_epair could not be resolve' test-report-freebsd.txt
sys/net/routing/test_rtsock_l3:rtm_add_v4_gu_ifa_ordered_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.003s]
sys/net/routing/test_rtsock_l3:rtm_add_v4_gw_direct_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.003s]
sys/net/routing/test_rtsock_l3:rtm_add_v4_no_rtf_host_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_add_v4_temporal1_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_add_v6_gu_gw_gu_direct_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_add_v6_temporal1_success  ->  skipped: module if_epair could not be resolved: No such file or directory[0.004s]
sys/net/routing/test_rtsock_l3:rtm_change_v4_flags_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_change_v4_gw_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_change_v4_mtu_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_change_v6_flags_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_change_v6_gw_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_change_v6_mtu_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
sys/net/routing/test_rtsock_l3:rtm_del_v4_gu_ifa_prefixroute_success  ->  skipped: module if_epair could not be resolved: No such file or directory  [0.004s]
(...)