Merge pull request #12729 from neheb/png4
authorRosen Penev <rosenp@gmail.com>
Mon, 6 Jul 2020 14:13:27 +0000 (07:13 -0700)
committerGitHub <noreply@github.com>
Mon, 6 Jul 2020 14:13:27 +0000 (07:13 -0700)
libpng: fix compilation with ccache


Trivial merge