From 197166d9065456a75c66201c47a4cb49346f21ae Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon@gmx.de>
Date: Sun, 25 Jun 2017 20:31:09 +0200
Subject: [PATCH] LWIP_LOOPBACK_MAX_PBUFS: fix compilation or memory leak for
 LWIP_LOOPBACK_MAX_PBUFS > 255

---
 src/core/netif.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/netif.c b/src/core/netif.c
index b77d1071..72c658ce 100644
--- a/src/core/netif.c
+++ b/src/core/netif.c
@@ -956,7 +956,7 @@ netif_loop_output(struct netif *netif, struct pbuf *p)
   clen = pbuf_clen(r);
   /* check for overflow or too many pbuf on queue */
   if (((netif->loop_cnt_current + clen) < netif->loop_cnt_current) ||
-     ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) {
+     ((netif->loop_cnt_current + clen) > LWIP_MAX(LWIP_LOOPBACK_MAX_PBUFS, 0xFFFF))) {
     pbuf_free(r);
     LINK_STATS_INC(link.memerr);
     LINK_STATS_INC(link.drop);