[VOL-4291] Rw-core updates for gRPC migration

Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/golang.org/x/sys/unix/gccgo.go b/vendor/golang.org/x/sys/unix/gccgo.go
index 86032c1..0dee232 100644
--- a/vendor/golang.org/x/sys/unix/gccgo.go
+++ b/vendor/golang.org/x/sys/unix/gccgo.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build gccgo
-// +build !aix
+//go:build gccgo && !aix
+// +build gccgo,!aix
 
 package unix