Merged revisions 67304 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r67304 | file | 2007-06-05 12:22:30 -0300 (Tue, 05 Jun 2007) | 2 lines

Only muck with the thread structure if an idle one was found/created.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@67305 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -974,8 +974,10 @@ static struct iax2_thread *find_idle_thread(void)
 
 	/* this thread is not processing a full frame (since it is idle),
 	   so ensure that the field for the full frame call number is empty */
-	thread->ffcallno = 0;
-	memset(&thread->ffsin, 0, sizeof(thread->ffsin));
+	if (thread) {
+		thread->ffcallno = 0;
+		memset(&thread->ffsin, 0, sizeof(thread->ffsin));
+	}
 
 	return thread;
 }