From: Olle Johansson <oej@edvina.net>
Date: Thu, 16 Nov 2006 16:51:59 +0000 (+0000)
Subject: Don't fixup if there's nothing to fixup
X-Git-Tag: 1.4.0-beta4~101
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d1ee29fc20b37a4fc285fcc233bc2972642334b1;p=thirdparty%2Fasterisk.git

Don't fixup if there's nothing to fixup


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@47744 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index e480ad70f1..1d01da5f8e 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -3507,6 +3507,11 @@ static int sip_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
 	}
 	p = newchan->tech_pvt;
 
+	if (!p) {
+		ast_log(LOG_WARNING, "No pvt after masquerade. Strange things may happen\n");
+		return -1;
+	}
+
 	ast_mutex_lock(&p->lock);
 	append_history(p, "Masq", "Old channel: %s\n", oldchan->name);
 	append_history(p, "Masq (cont)", "...new owner: %s\n", newchan->name);