test/errchk: use "#!/usr/bin/env perl" shebang line

fix test failure of go.tools sub-repo on NetBSD.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/9662044

diff --git a/test/errchk b/test/errchk
index b8b312a923745e5c29a0654987602b549664ac89..de0c4fd2f87c71faa12b41a727091a37086818fe 100755 (executable)
--- a/test/errchk
+++ b/test/errchk
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 # Copyright 2009 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.