vendor: update vendored dependancies

This change updates dependancies to be consistent with Gopkg.toml.
This change was generated by running "dep ensure".

1 files changed, 5 insertions, 1 deletions

diff --git a/vendor/golang.org/x/sys/windows/env_windows.go b/vendor/golang.org/x/sys/windows/env_windows.go
index a9d8ef4..bdc71e2 100644
--- a/vendor/golang.org/x/sys/windows/env_windows.go
+++ b/vendor/golang.org/x/sys/windows/env_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2010 The Go Authors.  All rights reserved.
+// Copyright 2010 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -23,3 +23,7 @@ func Clearenv() {
 func Environ() []string {
 	return syscall.Environ()
 }
+
+func Unsetenv(key string) error {
+	return syscall.Unsetenv(key)
+}