From b7230f394c153f2a91996806474a8c98435aac54 Mon Sep 17 00:00:00 2001
From: Jason2866 <24528715+Jason2866@users.noreply.github.com>
Date: Tue, 14 Dec 2021 21:15:19 +0100
Subject: [PATCH] check if NDEBUG

is already defined
---
 lib/lib_audio/ESP8266Audio/src/libflac/config.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/lib_audio/ESP8266Audio/src/libflac/config.h b/lib/lib_audio/ESP8266Audio/src/libflac/config.h
index cf6c07dfe..b0aebe44d 100644
--- a/lib/lib_audio/ESP8266Audio/src/libflac/config.h
+++ b/lib/lib_audio/ESP8266Audio/src/libflac/config.h
@@ -3,7 +3,9 @@
 #ifdef DEBUG
   #undef NDEBUG
 #else
-  #define NDEBUG
+  #ifndef NDEBUG
+    #define NDEBUG
+  #endif
 #endif
 
 /* config.h.  Generated from config.h.in by configure.  */