net/rpc: listen on localhost, let kernel pick port

This avoids a pop-up box on OS X and it avoids
a test failure if something is using 5555.
I apologize for not noticing this during the review.

TBR=r
CC=golang-codereviews
https://golang.org/cl/152320044

diff --git a/src/net/rpc/client_test.go b/src/net/rpc/client_test.go
index c138c06b8d33cb4303b20a2d34143078f10bb7d8..d116d2acc9aa29ec74a93ba15201c2cf31d6c379 100644 (file)
--- a/src/net/rpc/client_test.go
+++ b/src/net/rpc/client_test.go
@@ -63,13 +63,13 @@ func TestGobError(t *testing.T) {
        }()
        Register(new(S))
 
-       listen, err := net.Listen("tcp", ":5555")
+       listen, err := net.Listen("tcp", "127.0.0.1:0")
        if err != nil {
                panic(err)
        }
        go Accept(listen)
 
-       client, err := Dial("tcp", ":5555")
+       client, err := Dial("tcp", listen.Addr().String())
        if err != nil {
                panic(err)
        }