all: fix go vet warnings

rpc/ipc_unix.go

@@ -41,5 +41,5 @@ func ipcListen(endpoint string) (net.Listener, error) {
 
 // newIPCConnection will connect to a Unix socket on the given endpoint.
 func newIPCConnection(endpoint string) (net.Conn, error) {
-	return net.DialUnix("unix", nil, &net.UnixAddr{endpoint, "unix"})
+	return net.DialUnix("unix", nil, &net.UnixAddr{Name: endpoint, Net: "unix"})
 }

rpc/json_test.go

@@ -75,7 +75,7 @@ func TestJSONRequestParsing(t *testing.T) {
 			t.Fatalf("%v", e)
 		}
 		if id != 1234 {
-			t.Fatalf("Expected id 1234 but got %s", id)
+			t.Fatalf("Expected id 1234 but got %d", id)
 		}
 	} else {
 		t.Fatalf("invalid request, expected *json.RawMesage got %T", requests[0].id)