[PATCH] ieee80211_wx.c: remove dead code

Since sec->key_sizes[] is an u8, len can't be < 0.

Spotted by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/ieee80211/ieee80211_wx.c

@@ -503,7 +503,7 @@ int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
 	len = sec->key_sizes[key];
 	memcpy(keybuf, sec->keys[key], len);
 
-	erq->length = (len >= 0 ? len : 0);
+	erq->length = len;
 	erq->flags |= IW_ENCODE_ENABLED;
 
 	if (ieee->open_wep)