From 43bdadda0df6b21b55194e18125eee5b0777152b Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sun, 3 May 2020 02:57:58 +0200
Subject: [PATCH] Update PNG library to avoid more -Wundef warnings in MinGW
 build

Define symbols used in MIPS/PPC code which are also tested using "#if
PNG_FOO > 0" as 0 instead of leaving them undefined.
---
 src/png | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/png b/src/png
index f1ecc2c50d..46b17e804b 160000
--- a/src/png
+++ b/src/png
@@ -1 +1 @@
-Subproject commit f1ecc2c50d0976f3d8f0eaf805cbc399c0780d8b
+Subproject commit 46b17e804bcab3729f69993c8dc2d1f1b15cc780