lang/zig: update to 0.8.1

bugfix only release

- https://ziglang.org/download/0.8.1/release-notes.html

Reviewed by:	jbeich
Differential Revision: https://reviews.freebsd.org/D31880

lang/zig/Makefile

@@ -1,5 +1,5 @@
 PORTNAME=	zig
-DISTVERSION=	0.8.0
+DISTVERSION=	0.8.1
 CATEGORIES=	lang
 MASTER_SITES=	https://ziglang.org/download/${DISTVERSION}/
 

lang/zig/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1623448037
-SHA256 (zig-0.8.0.tar.xz) = 03a828d00c06b2e3bb8b7ff706997fd76bf32503b08d759756155b6e8c981e77
-SIZE (zig-0.8.0.tar.xz) = 12614896
+TIMESTAMP = 1631079706
+SHA256 (zig-0.8.1.tar.xz) = 8c428e14a0a89cb7a15a6768424a37442292858cdb695e2eb503fa3c7bf47f1a
+SIZE (zig-0.8.1.tar.xz) = 12650228

lang/zig/files/patch-doc_langref.html.in

@@ -1,13 +0,0 @@
---- doc/langref.html.in.orig	2021-06-14 12:00:33 UTC
-+++ doc/langref.html.in
-@@ -221,7 +221,9 @@
-       </p>
-       <p>
-       If you search for something specific in this documentation and do not find it,
--      please <a href="https://github.com/ziglang/www.ziglang.org/issues/new?title=I%20searched%20for%20___%20in%20the%20docs%20and%20didn%27t%20find%20it">file an issue</a> or <a href="https://webchat.freenode.net/?channels=%23zig">say something on IRC</a>.
-+      please <a
-+          href="https://github.com/ziglang/www.ziglang.org/issues/new?title=I%20searched%20for%20___%20in%20the%20docs%20and%20didn%27t%20find%20it">file
-+          an issue</a> or <a href="https://web.libera.chat/#zig">say something on IRC</a>.
-       </p>
-       <p>
-       The code samples in this document are compiled and tested as part of the main test suite of Zig.