File 0045-ucm-Set-uc_mgr-ctl-to-NULL-after-closing-it.patch of Package alsa

From 1629e2fbf3dc211eceb37f980e11e5babe1cefe4 Mon Sep 17 00:00:00 2001
From: Tanu Kaskinen <tanuk@iki.fi>
Date: Sat, 26 Jan 2013 14:20:20 +0200
Subject: [PATCH 45/50] ucm: Set uc_mgr->ctl to NULL after closing it.

Fixes a double-free bug.

Signed-off-by: Tanu Kaskinen <tanuk@iki.fi>
Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 src/ucm/main.c |    1 +
 1 file changed, 1 insertion(+)

--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -145,6 +145,7 @@ static int open_ctl(snd_use_case_mgr_t *
 		free(uc_mgr->ctl_dev);
 		uc_mgr->ctl_dev = NULL;
 		snd_ctl_close(uc_mgr->ctl);
+		uc_mgr->ctl = NULL;
 	
 	}
 	err = snd_ctl_open(ctl, ctl_dev, 0);