ALSA: Kill snd_assert() in sound/isa/*

Kill snd_assert() in sound/isa/*, 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/isa/ad1816a/ad1816a_lib.c b/sound/isa/ad1816a/ad1816a_lib.c
index 4b8dfe2..3bfca7c 100644
--- a/sound/isa/ad1816a/ad1816a_lib.c
+++ b/sound/isa/ad1816a/ad1816a_lib.c
@@ -394,7 +394,8 @@
 
 static unsigned long snd_ad1816a_timer_resolution(struct snd_timer *timer)
 {
-	snd_assert(timer != NULL, return 0);
+	if (snd_BUG_ON(!timer))
+		return 0;
 
 	return 10000;
 }
@@ -961,7 +962,8 @@
 	unsigned int idx;
 	int err;
 
-	snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
+	if (snd_BUG_ON(!chip || !chip->card))
+		return -EINVAL;
 
 	card = chip->card;