runtime: fix windows build

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/1747041

diff --git a/src/pkg/runtime/windows/386/signal.c b/src/pkg/runtime/windows/386/signal.c
index 663ed874bd2634e574a83d1bc82b6e4e0deb1748..278bb7fc4c5d7c9434f8267ac35a8734343536ce 100644 (file)
--- a/src/pkg/runtime/windows/386/signal.c
+++ b/src/pkg/runtime/windows/386/signal.c
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+#include "runtime.h"
+
 void
 initsig(int32 queue)
 {