ALSA: seq: fill client ID in return value of pool operation

The returned value of 'get/seq client pool' operation has zeroed value
for its client ID, against requested client ID.

This commit fix the bug by filling it with index value of referred
client object.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/seq/seq_clientmgr.c

@@ -1879,6 +1879,7 @@ static int snd_seq_ioctl_get_client_pool(struct snd_seq_client *client,
 	if (cptr == NULL)
 		return -ENOENT;
 	memset(&info, 0, sizeof(info));
+	info.client = cptr->number;
 	info.output_pool = cptr->pool->size;
 	info.output_room = cptr->pool->room;
 	info.output_free = info.output_pool;