From e51652b4db0e5922d3997e676aa90ae8ff8cbeeb Mon Sep 17 00:00:00 2001
From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
Date: Sun, 22 Nov 2015 22:41:10 -0600
Subject: [PATCH] [libpng17] Reverted 12 -> 12U again.

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

diff --git a/pngrutil.c b/pngrutil.c
index 85b6d73df..0d3c549ca 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1948,7 +1948,7 @@ png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr)
    /* We need to have at least 12 bytes after the purpose string
     * in order to get the parameter information.
     */
-   if (endptr - buf <= 12U)
+   if (endptr - buf <= 12)
    {
       png_chunk_benign_error(png_ptr, "invalid");
       return;