From 2083674aa015b4b10544f383c6894da37086f862 Mon Sep 17 00:00:00 2001
From: Andy Green <andy@warmcat.com>
Date: Fri, 9 Sep 2016 22:15:43 +0800
Subject: [PATCH] lws_status protect against pss list changing

---
 plugins/protocol_lws_status.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/plugins/protocol_lws_status.c b/plugins/protocol_lws_status.c
index 3bb9864b..67b53980 100644
--- a/plugins/protocol_lws_status.c
+++ b/plugins/protocol_lws_status.c
@@ -148,6 +148,23 @@ callback_lws_status(struct lws *wsi, enum lws_callback_reasons reason,
 			if (pss->subsequent)
 				*p++ = ',';
 			pss->subsequent = 1;
+
+			m = 0;
+			pss2 = vhd->live_pss_list;
+			while (pss2) {
+				if (pss2 == pss->walk_next) {
+					m = 1;
+					break;
+				}
+				pss2 = pss2->next;
+			}
+			if (!m) {
+				/* our next guy went away */
+				pss->walk = WALK_FINAL;
+				pss->changed_partway = 1;
+				break;
+			}
+
 			lws_get_peer_simple(pss->walk_next->wsi, ip, sizeof(ip));
 			p += snprintf(p, end - p,
 					"{\"peer\":\"%s\",\"time\":\"%ld\","