[ALSA] typo-fix and snd_assert()-expression-split

ALSA Core
This patch corrects a typo in the kerneldocs of snd_info_get_str().
It also splits the expressions of snd_assert() in snd_info_unregister()
into one-expression-per-call for better debugging.

Signed-off-by: Henrik Kretzschmar <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>

sound/core/info.c

···
 }
 
 /**
- * snd_info_get_line - parse a string token
+ * snd_info_get_str - parse a string token
  * @dest: the buffer to store the string token
  * @src: the original string
  * @len: the max. length of token - 1
···
 {
 	struct proc_dir_entry *root;
 
-	snd_assert(entry != NULL && entry->p != NULL, return -ENXIO);
+	snd_assert(entry != NULL, return -ENXIO);
+	snd_assert(entry->p != NULL, return -ENXIO);
 	root = entry->parent == NULL ? snd_proc_root : entry->parent->p;
 	snd_assert(root, return -ENXIO);
 	down(&info_mutex);