ipw2x00: clean up a condition

The original condition was "(PAGE_SIZE - len)" when "(len < PAGE_SIZE)"
is intended.

This condition is not really sufficient, but also not really needed...
If "len > PAGE_SIZE" then it we will print a warning message in dmesg
but there are no other effects.  Maybe we should just remove the
condition?
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ipw2x00/ipw2200.c

@@ -1363,7 +1363,7 @@ static ssize_t show_cmd_log(struct device *d,
 	if (!priv->cmdlog)
 		return 0;
 	for (i = (priv->cmdlog_pos + 1) % priv->cmdlog_len;
-	     (i != priv->cmdlog_pos) && (PAGE_SIZE - len);
+	     (i != priv->cmdlog_pos) && (len < PAGE_SIZE);
 	     i = (i + 1) % priv->cmdlog_len) {
 		len +=
 		    snprintf(buf + len, PAGE_SIZE - len,