[gcc r12-7280] net: add hurd build tag for setReadMsgCloseOnExec

[Ian Lance Taylor]

https://gcc.gnu.org/g:3f2a6b041d910cab08332ae01a8a9fcfe2e9036a

commit r12-7280-g3f2a6b041d910cab08332ae01a8a9fcfe2e9036a
Author: Ian Lance Taylor <iant@golang.org>
Date:   Wed Feb 16 16:57:28 2022 -0800

    net: add hurd build tag for setReadMsgCloseOnExec
    
    Patch from Svante Signell.
    
            PR go/103573
            PR go/104290
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/386216

Diff:
---
 gcc/go/gofrontend/MERGE                  | 2 +-
 libgo/go/net/unixsock_readmsg_cloexec.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 3742414c828..1fdc5a95d44 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-3742e8a154bfec805054b4ebf0809f12dc7694da
+90ed127ef053b758288af9c4e43473e257770bc3
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/libgo/go/net/unixsock_readmsg_cloexec.go b/libgo/go/net/unixsock_readmsg_cloexec.go
index fa4fd7d9331..84479e58d65 100644
--- a/libgo/go/net/unixsock_readmsg_cloexec.go
+++ b/libgo/go/net/unixsock_readmsg_cloexec.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build aix || darwin || freebsd || solaris
+//go:build aix || darwin || freebsd || hurd || solaris
 
 package net