wireless/iwlwifi/iwl-4965.c: add parentheses

'!' has a higher priority than '&': bitanding has no effect.
Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-4965.c

@@ -4249,7 +4249,7 @@ static u8 iwl4965_is_fat_tx_allowed(struct iwl4965_priv *priv,
 
 	if (sta_ht_inf) {
 		if ((!sta_ht_inf->ht_supported) ||
-		   (!sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH))
+		   (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH)))
 			return 0;
 	}