From 62c6fbbd295ee3391d28a71606b623c8e11668d3 Mon Sep 17 00:00:00 2001
From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
Date: Tue, 7 May 2013 23:16:06 -0500
Subject: [PATCH] [libpng16] Check that PNG_MAXIMUM_INFLATE_WINDOW is defined
 before using it.

---
 pngrutil.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pngrutil.c b/pngrutil.c
index 4e84b0ebd..ba50d6ecb 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -369,7 +369,8 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
       int ret; /* zlib return code */
 #     if ZLIB_VERNUM >= 0x1240
 
-#        ifdef PNG_SET_OPTION_SUPPORTED
+#        if defined(PNG_SET_OPTION_SUPPORTED) && \
+            defined(PNG_MAXIMUM_INFLATE_WINDOW)
             int window_bits;
 
             if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) ==