wangweidong f1640c3dde bgmac: fix a missing check for build_skb
when build_skb failed, it may occure a NULL pointer.
So add a 'NULL check' for it.

Signed-off-by: Weidong Wang <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-13 00:24:14 -05:00
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