From d10c2c7ee72aa6044bad2f3fa27bfe9bdec5e00e Mon Sep 17 00:00:00 2001
From: "Kevin P. Fleming" <kpfleming@digium.com>
Date: Thu, 1 Sep 2005 20:15:58 +0000
Subject: [PATCH] don't unlock a channel we didn't lock

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6486 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 pbx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pbx.c b/pbx.c
index 511218e7cf..9db31faa13 100755
--- a/pbx.c
+++ b/pbx.c
@@ -4881,7 +4881,8 @@ int ast_pbx_outgoing_exten(const char *type, int format, void *data, int timeout
 					ast_verbose(VERBOSE_PREFIX_4 "Channel %s was answered.\n", chan->name);
 
 				if (sync > 1) {
-					ast_mutex_unlock(&chan->lock);
+					if (channel)
+						ast_mutex_unlock(&chan->lock);
 					if (ast_pbx_run(chan)) {
 						ast_log(LOG_ERROR, "Unable to run PBX on %s\n", chan->name);
 						ast_hangup(chan);