[PATCH] net/ieee80211/ieee80211_tx.c: swapped memset arguments

Fix swapped memset() arguments in net/ieee80211/ieee80211_tx.c found by
Maciej Soltysiak.

Patch by Jesper Juhl.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>

net/ieee80211/ieee80211_tx.c

@@ -223,7 +223,7 @@ struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size,
 	if (!txb)
 		return NULL;
 
-	memset(txb, sizeof(struct ieee80211_txb), 0);
+	memset(txb, 0, sizeof(struct ieee80211_txb));
 	txb->nr_frags = nr_frags;
 	txb->frag_size = txb_size;