wireless: fix two bad print_ssid conversions

This patch fixes two current compilation problems. They showed up
with CONFIG_IEEE80211_DEBUG defined.
Signed-off-by: NHolger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

net/ieee80211/ieee80211_wx.c

@@ -399,6 +399,10 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
 
 	/* If a new key was provided, set it up */
 	if (erq->length > 0) {
+#ifdef CONFIG_IEEE80211_DEBUG
+		DECLARE_SSID_BUF(ssid);
+#endif
+
 		len = erq->length <= 5 ? 5 : 13;
 		memcpy(sec.keys[key], keybuf, erq->length);
 		if (len > erq->length)