Update linpng submodule to fix a build problem under iOS

See https://github.com/wxWidgets/libpng/pull/1
This commit is contained in:
Vadim Zeitlin 2020-07-21 22:32:50 +02:00
parent 56177cb5a3
commit e77bba1a42

@ -1 +1 @@
Subproject commit 46b17e804bcab3729f69993c8dc2d1f1b15cc780
Subproject commit 3ffeff7877598d3236cc09a6d3f478073eb33f35