ALSA: fireface: remove unnecessary condition in hwdep_read()

Smatch complains that "count" is not clamped when "ff->dev_lock_changed"
and it leads to an information leak.  Fortunately, that's not actually
possible and the condition can be deleted.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/YA6n6I8EcNAO5ZFs@mwanda
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/fireface/ff-hwdep.c

@@ -35,13 +35,11 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf,  long count,
 	}
 
 	memset(&event, 0, sizeof(event));
-	if (ff->dev_lock_changed) {
 	event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS;
 	event.lock_status.status = (ff->dev_lock_count > 0);
 	ff->dev_lock_changed = false;
 
 	count = min_t(long, count, sizeof(event.lock_status));
-	}
 
 	spin_unlock_irq(&ff->lock);