net/rpc: fix build

LGTM=adg
R=golang-codereviews, adg
CC=golang-codereviews
https://golang.org/cl/151620043

diff --git a/src/net/rpc/client_test.go b/src/net/rpc/client_test.go
index fb838eb34f2b456e8db6840a7ea0d9158952361a..5dd111b299ffa420b724a4ab4751f133a40f646b 100644 (file)
--- a/src/net/rpc/client_test.go
+++ b/src/net/rpc/client_test.go
@@ -8,6 +8,7 @@ import (
        "errors"
        "fmt"
        "net"
+       "runtime"
        "strings"
        "testing"
 )