HT: Fix 20/40 coex Action frame parsing

Commit 5ce3ae4c8f2a07c28e0bbae1b68e5524ee034387 tried to clean up
fetching a pointer to the action code field, but it forgot to add
IEEE80211_HDRLEN to the pointer. This resulted in the coex report
elements being read from too early in the frame.

Signed-off-by: Jouni Malinen <j@w1.fi>
1 file changed