From 7bbd665b34b0ad5074fc0dd44cf20838baeeafa3 Mon Sep 17 00:00:00 2001
From: Viktor Szakats <vszakats@users.noreply.github.com>
Date: Thu, 30 Mar 2017 12:22:25 +0000
Subject: [PATCH] tweak

---
 pngpriv.h | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/pngpriv.h b/pngpriv.h
index 2369b8e29..0b13740b0 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -466,10 +466,12 @@
    static_cast<type>(static_cast<const void*>(value))
 #else
 #  define png_voidcast(type, value) (value)
-#  if defined( _WIN64 ) && ! defined( __GNUC__ )
-      typedef unsigned __int64 png_ptruint;
-#  elif defined( _WIN64 )
-      typedef unsigned long long png_ptruint;
+#  ifdef _WIN64
+#     ifdef __GNUC__
+         typedef unsigned long long png_ptruint;
+#     else
+         typedef unsigned __int64 png_ptruint;
+#     endif
 #  else
       typedef unsigned long png_ptruint;
 #  endif