ALSA: Kill snd_assert() in other places

Kill snd_assert() in other places, either removed or replaced with
if () with snd_BUG_ON().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index 1c4797b..791d2fb 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -1560,7 +1560,8 @@
 	struct snd_cs4231 *chip = card->private_data;
 	int err, idx;
 
-	snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
+	if (snd_BUG_ON(!chip || !chip->pcm))
+		return -EINVAL;
 
 	strcpy(card->mixername, chip->pcm->name);