Alexandre Julliard : png: Import upstream release 1.6.40.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 49e12082c0b87184a4e3fc392ac0e93fe20fdd98
URL:    https://gitlab.winehq.org/wine/wine/-/commit/49e12082c0b87184a4e3fc392ac0e93...

Author: Alexandre Julliard 
Date:   Mon Jul  3 11:21:56 2023 +0200

png: Import upstream release 1.6.40.

---

libs/png/AUTHORS    |  2 ++
 libs/png/LICENSE    |  4 ++--
 libs/png/png.c      |  8 +++----
 libs/png/png.h      | 22 ++++++++++----------
 libs/png/pngconf.h  |  2 +-
 libs/png/pngget.c   | 13 +++++++++++-
 libs/png/pngpriv.h  |  6 +++---
 libs/png/pngset.c   | 60 +++++++++++++++++++++--------------------------------
 libs/png/pngwrite.c | 10 ++++++---
 9 files changed, 66 insertions(+), 61 deletions(-)