cfg80211: fix sending WoWLAN TCP wakeup settings

commit e248ad30 upstream.

The code sending the current WoWLAN TCP wakeup settings in
nl80211_send_wowlan_tcp() is not closing the nested attribute,
thus causing the parser to get confused on the receiver side
in userspace (iw). Fix this.
Reported-by: Deepak Arora <deepakx.arora@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

net/wireless/nl80211.c

@@ -7177,6 +7177,8 @@ static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
 		    &tcp->payload_tok))
 		return -ENOBUFS;
 
+	nla_nest_end(msg, nl_tcp);
+
 	return 0;
 }