Increment retries

pkg/liveshare/port_forwarder_test.go

@@ -86,6 +86,7 @@ func TestPortForwarderStart(t *testing.T) {
 		for conn == nil && retries < 2 {
 			conn, err = net.DialTimeout("tcp", ":8000", 2*time.Second)
 			if conn == nil {
+				retries++
 				time.Sleep(1 * time.Second)
 			}
 		}