From fd8ef4c428f8e35dfe6c7aa956734b68118b05a5 Mon Sep 17 00:00:00 2001
From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
Date: Fri, 7 Aug 2015 14:43:34 -0500
Subject: [PATCH] [libpng16] Add #ifdef PNG_DEBUG/#endif around normally
 unreachable code

in pngread.c
---
 pngread.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pngread.c b/pngread.c
index 9cc5510dd..29cbc00f4 100644
--- a/pngread.c
+++ b/pngread.c
@@ -3630,8 +3630,10 @@ png_image_read_background(png_voidp argument)
          }
          break;
 
+#ifdef PNG_DEBUG
       default:
          png_error(png_ptr, "unexpected bit depth");
+#endif
    }
 
    return 1;