From e9389e3122fc47227f961eaaa6541380ef4f2b0c Mon Sep 17 00:00:00 2001
From: Me No Dev <me-no-dev@users.noreply.github.com>
Date: Mon, 13 May 2019 23:18:38 +0300
Subject: [PATCH] Fix AsyncUDP buffer error

fixes: https://github.com/espressif/arduino-esp32/issues/2685
---
 libraries/AsyncUDP/src/AsyncUDP.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libraries/AsyncUDP/src/AsyncUDP.cpp b/libraries/AsyncUDP/src/AsyncUDP.cpp
index 63ccc114..762529b9 100644
--- a/libraries/AsyncUDP/src/AsyncUDP.cpp
+++ b/libraries/AsyncUDP/src/AsyncUDP.cpp
@@ -682,8 +682,9 @@ void AsyncUDP::_recv(udp_pcb *upcb, pbuf *pb, const ip_addr_t *addr, uint16_t po
         if(_handler) {
             AsyncUDPPacket packet(this, this_pb, addr, port, netif);
             _handler(packet);
+        } else {
+            pbuf_free(this_pb);
         }
-        pbuf_free(this_pb);
     }
 }