tree cb83d7da334b75f0ade06613b05a5455615c000d
parent 4cbc9dd97325661876f1bfe9563faffd7d94bb00
author Christopher Ferris <cferris@google.com> 1432065928 -0700
committer Christopher Ferris <cferris@google.com> 1432228964 -0700

Avoid a harmless potential integer overflow in png_XYZ_from_xy().

This change replicates commit d46b57 applied to the libpng16
codebase.

Bug: 21039636
(cherry picked from commit 771583a01bd0756a1b6861ab1f00b7bd1842a0cd)

Change-Id: I20bc002b18d14279d7fb407368077487c65f1ff4