$OpenBSD: patch-pngerror_c,v 1.3 2004/07/10 23:19:21 brad Exp $
--- pngerror.c.orig	Thu Oct  3 07:32:27 2002
+++ pngerror.c	Sat Jul 10 19:11:39 2004
@@ -137,7 +137,7 @@ png_format_buffer(png_structp png_ptr, p
    {
       buffer[iout++] = ':';
       buffer[iout++] = ' ';
-      png_memcpy(buffer+iout, error_message, 64);
+      png_strncpy(buffer+iout, error_message, 63);
       buffer[iout+63] = 0;
    }
 }
