mac80211: fix lock leak w/ ARP filtering and w/o CONFIG_INET

"mac80211: make ARP filtering depend on CONFIG_INET" introduced this
potential locking leak.

Reported-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
1 file changed