Merged revisions 47711 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

........
r47711 | file | 2006-11-15 17:29:30 -0500 (Wed, 15 Nov 2006) | 2 lines

Make sure that the pvt structure exists before trying to do fixup on Local channels. (issue #7937 reported by mada123, fix by alamantia with mods by me)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@47712 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_local.c

@@ -295,6 +295,10 @@ static int local_write(struct ast_channel *ast, struct ast_frame *f)
 static int local_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
 {
 	struct local_pvt *p = newchan->tech_pvt;
+
+	if (!p)
+		return -1;
+
 	ast_mutex_lock(&p->lock);
 
 	if ((p->owner != oldchan) && (p->chan != oldchan)) {