Piotr Tabor e2b5835e64 Fix go-tip: (1.17) fmt error:
```
gofmt' started at Thu Mar 18 18:06:00 UTC 2021
transport/sockopt_unix.go
diff -u transport/sockopt_unix.go.orig transport/sockopt_unix.go
--- transport/sockopt_unix.go.orig	2021-03-18 18:06:01.667483834 +0000
+++ transport/sockopt_unix.go	2021-03-18 18:06:01.667483834 +0000
@@ -1,3 +1,4 @@
+//go:build !windows
 // +build !windows

 package transport
transport/sockopt_windows.go
diff -u transport/sockopt_windows.go.orig transport/sockopt_windows.go
--- transport/sockopt_windows.go.orig	2021-03-18 18:06:01.667483834 +0000
+++ transport/sockopt_windows.go	2021-03-18 18:06:01.667483834 +0000
@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
```
2021-03-18 19:44:28 +01:00
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pkg/ is a collection of utility packages used by etcd without being specific to etcd itself. A package belongs here only if it could possibly be moved out into its own repository in the future.