xend: fix domain_migrate

When the guest(pv-on-hvm guest that cannot suspend) reboot in
LiveMigration, the disconnecting of src-side is not transmitted to
dist-side. As a result, the error processing on the dist side is not
executed.

Signed-off-by: Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>

tools/python/xen/xend/XendDomain.py

@@ -1378,6 +1378,7 @@ class XendDomain:
                 XendCheckpoint.save(sock.fileno(), dominfo, True, live,
                                     dst, node=node)
             finally:
+                sock.shutdown(socket.SHUT_RDWR)
                 sock.close()
 
     def domain_save(self, domid, dst, checkpoint=False):