From 5deedf071ab4cd8b61e6be69d13075f0dac0460b Mon Sep 17 00:00:00 2001
From: Lorenzo <lorenzo.orio@icloud.com>
Date: Sat, 28 Sep 2024 18:32:05 -0400
Subject: [PATCH] fix for compiler error ISSUE#371

fix for compiler error:
"MFRC522Extended.cpp:824: warning: ordered comparison of pointer with integer zero [-Wextra]
  if (backData && (backLen > 0)) {"
---
 src/MFRC522Extended.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/MFRC522Extended.cpp b/src/MFRC522Extended.cpp
index da603ab7..a9d5c189 100644
--- a/src/MFRC522Extended.cpp
+++ b/src/MFRC522Extended.cpp
@@ -821,7 +821,7 @@ MFRC522::StatusCode MFRC522Extended::TCL_Transceive(TagInfo *tag, byte *sendData
 	// Swap block number on success
 	tag->blockNumber = !tag->blockNumber;
 
-	if (backData && (backLen > 0)) {
+	if (backData && (int(backLen) > 0)) {
 		if (*backLen < in.inf.size)
 			return STATUS_NO_ROOM;
 
@@ -844,7 +844,7 @@ MFRC522::StatusCode MFRC522Extended::TCL_Transceive(TagInfo *tag, byte *sendData
 		if (result != STATUS_OK)
 			return result;
 
-		if (backData && (backLen > 0)) {
+		if (backData && (int(backLen) > 0)) {
 			if ((*backLen + ackDataSize) > totalBackLen)
 				return STATUS_NO_ROOM;