devel/libepoll-shim: Update snashot

Update devel/libepoll-shim to a more recent snapshot.

PR: 223530 (original version)
Submitted by: Greg V
Obtained from: FreeBSD Graphics Team development repo

		https://github.com/FreeBSDDesktop/freebsd-ports/tree/feature/input
		https://github.com/FreeBSDDesktop/freebsd-ports/tree/feature/input-ports