CHROMIUM: net/sched: Fix crash in latency_sample function.

Fix kernel panic due to null reference to ipv6h.

BUG=b:151446369
TEST=Network stress with IPv6 and ARL enabled.

Signed-off-by: Kan Yan <kyan@google.com>
Change-Id: I65693670e7448263be776c3716ca2ff0beeeb7ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/2106898
Reviewed-by: Danny Mitzel <mitzel@chromium.org>
1 file changed