mac80211: no need for ht.enabled

We can simply use conf_is_ht() check where needed.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index c5c0c52..f6547de5 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -130,11 +130,10 @@
 		}
 	}
 
-	ht_changed = local->hw.conf.ht.enabled != enable_ht ||
+	ht_changed = conf_is_ht(&local->hw.conf) != enable_ht ||
 		     channel_type != local->hw.conf.ht.channel_type;
 
 	local->oper_channel_type = channel_type;
-	local->hw.conf.ht.enabled = enable_ht;
 
 	if (ht_changed)
 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_HT);