From 7c7a915e9511aebc6c93b76707f1a7dfa51d6e2c Mon Sep 17 00:00:00 2001
From: Tilghman Lesher <tilghman@meg.abyt.es>
Date: Fri, 17 Oct 2008 17:10:02 +0000
Subject: [PATCH] Merged revisions 150635 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/trunk

........
  r150635 | tilghman | 2008-10-17 12:09:03 -0500 (Fri, 17 Oct 2008) | 2 lines

  Make helper call a little safer (suggested by Russell on IRC)
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@150636 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_iax2.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index 85b6d9e39c..413ca76a16 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -2312,8 +2312,9 @@ static void iax2_destroy(int callno)
 	struct ast_channel *owner = NULL;
 
 retry:
-	pvt = iaxs[callno];
-	iax2_destroy_helper(pvt);
+	if ((pvt = iaxs[callno])) {
+		iax2_destroy_helper(pvt);
+	}
 
 	lastused[callno] = ast_tvnow();