Backport PNG cancellation buffer disposal fix to v4 - #3209

Backport PNG cancellation buffer disposal fix to v4#3209

JimBobSquarePants merged 1 commit into

release/4.1.xSixLabors/ImageSharp:release/4.1.xfrom

js/v4-backport-3203SixLabors/ImageSharp:js/v4-backport-3203Copy head branch name to clipboard