net: separate NaCl dependent placeholders from BSD's
To clarify the dependency of NaCl platform.
LGTM=adg
R=golang-codereviews, adg
CC=golang-codereviews
https://golang.org/cl/143830044
diff --git a/src/net/sockopt_bsd.go b/src/net/sockopt_bsd.go
index 2d36a55..00e4dbf 100644
--- a/src/net/sockopt_bsd.go
+++ b/src/net/sockopt_bsd.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.
-// +build darwin dragonfly freebsd nacl netbsd openbsd
+// +build darwin dragonfly freebsd netbsd openbsd
package net
