iwlagn: Fix a bug introduced by the HUGE command removal

Since we don't have HUGE command any more, there is no point in adding 1
to the num of slots in the command queue. Doing so is buggy and might corrupt
memory.

Bug introduced by 4ce7cc2b09553a91d4aea014c39674685715173a
iwlagn: support multiple TBs per command

Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

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

@@ -535,12 +535,7 @@ out_free_arrays:
 void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq,
 			int slots_num, u32 txq_id)
 {
-	int actual_slots = slots_num;
-
-	if (txq_id == priv->cmd_queue)
-		actual_slots++;
-
-	memset(txq->meta, 0, sizeof(struct iwl_cmd_meta) * actual_slots);
+	memset(txq->meta, 0, sizeof(struct iwl_cmd_meta) * slots_num);
 
 	txq->need_update = 0;