From 2323a3c85112529907e1d7d69719f5c9a6f79392 Mon Sep 17 00:00:00 2001
From: Mike Naberezny <mike@naberezny.com>
Date: Mon, 2 Nov 2015 23:01:49 -0800
Subject: [PATCH] png.py: Fix undefined name 'e'. (nw)

---
 scripts/build/png.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/build/png.py b/scripts/build/png.py
index fa9dc5d8853..76798443669 100644
--- a/scripts/build/png.py
+++ b/scripts/build/png.py
@@ -2778,4 +2778,5 @@ if __name__ == '__main__':
     try:
         _main(sys.argv)
     except Error:
-        print (sys.exc_info()[1], file=e)
+        e = sys.exc_info()[1]
+        print(e, file=sys.stderr)