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/ppc/beep.c b/sound/ppc/beep.c
index baa2a72..89f5c32 100644
--- a/sound/ppc/beep.c
+++ b/sound/ppc/beep.c
@@ -185,7 +185,8 @@
 			     struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
-	snd_assert(chip->beep, return -ENXIO);
+	if (snd_BUG_ON(!chip->beep))
+		return -ENXIO;
 	ucontrol->value.integer.value[0] = chip->beep->volume;
 	return 0;
 }
@@ -195,7 +196,8 @@
 {
 	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 	unsigned int oval, nval;
-	snd_assert(chip->beep, return -ENXIO);
+	if (snd_BUG_ON(!chip->beep))
+		return -ENXIO;
 	oval = chip->beep->volume;
 	nval = ucontrol->value.integer.value[0];
 	if (nval > 100)