From e34e0b45ded28856baac1a94c854f9a26d1f80f5 Mon Sep 17 00:00:00 2001
From: Admar Schoonen <admarschoonen@users.noreply.github.com>
Date: Wed, 30 Sep 2020 13:56:41 +0200
Subject: [PATCH] Fixed bug where mutex would not be unlocked (#3837)

Fixed bug where uartResizeRxBuffer() did not unlock mutex if creation of queue failed.
---
 cores/esp32/esp32-hal-uart.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cores/esp32/esp32-hal-uart.c b/cores/esp32/esp32-hal-uart.c
index 26652846..63ea03a5 100644
--- a/cores/esp32/esp32-hal-uart.c
+++ b/cores/esp32/esp32-hal-uart.c
@@ -257,6 +257,7 @@ size_t uartResizeRxBuffer(uart_t * uart, size_t new_size) {
         vQueueDelete(uart->queue);
         uart->queue = xQueueCreate(new_size, sizeof(uint8_t));
         if(uart->queue == NULL) {
+            UART_MUTEX_UNLOCK();
             return NULL;
         }
     }