Merged revisions 156294 via svnmerge from

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

........
  r156294 | tilghman | 2008-11-12 13:26:45 -0600 (Wed, 12 Nov 2008) | 6 lines
  
  If the SLA thread is not started, then reload causes a memory leak.
  (closes issue #13889)
   Reported by: eliel
   Patches: 
         app_meetme.c.patch uploaded by eliel (license 64)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@156295 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_meetme.c

@@ -1500,6 +1500,10 @@ static void sla_queue_event_full(enum sla_event_type type,
 {
 	struct sla_event *event;
 
+	if (sla.thread == AST_PTHREADT_NULL) {
+		return;
+	}
+
 	if (!(event = ast_calloc(1, sizeof(*event))))
 		return;