[gnome-boxes] Make LibvirtMachine::start private

[Christophe Fergeau <teuf src gnome org>]

commit 07e4d6745e1b48f5025c25b89ead6ff55d7d294f
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Mon Sep 17 14:53:44 2012 +0200

    Make LibvirtMachine::start private
    
    It's only used in LibvirtMachine.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=684224

 src/libvirt-machine.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/libvirt-machine.vala b/src/libvirt-machine.vala
index 20cbb0a..3dad11e 100644
--- a/src/libvirt-machine.vala
+++ b/src/libvirt-machine.vala
@@ -555,7 +555,7 @@ private class Boxes.LibvirtMachine: Boxes.Machine {
         };
     }
 
-    public async void start () {
+    private async void start () {
         if (state == MachineState.RUNNING)
             return;