mac80211: remove useless double check for open_count in __ieee80211_suspend()

We check local->open_count at the top of the __ieee80211_suspend(), so
there's no need to check for it again.  open_count is protected by the
rtnl, so there's no chance for it to have change between the two
calls.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/pm.c

@@ -59,7 +59,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 	cancel_work_sync(&local->dynamic_ps_enable_work);
 	del_timer_sync(&local->dynamic_ps_timer);
 
-	local->wowlan = wowlan && local->open_count;
+	local->wowlan = wowlan;
 	if (local->wowlan) {
 		int err;