monitor: Convert do_migrate_cancel() to QObject

Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

migration.c

@@ -82,7 +82,7 @@ void do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data)
     }
 }
 
-void do_migrate_cancel(Monitor *mon, const QDict *qdict)
+void do_migrate_cancel(Monitor *mon, const QDict *qdict, QObject **ret_data)
 {
     MigrationState *s = current_migration;
 

migration.h

@@ -52,7 +52,7 @@ void qemu_start_incoming_migration(const char *uri);
 
 void do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data);
 
-void do_migrate_cancel(Monitor *mon, const QDict *qdict);
+void do_migrate_cancel(Monitor *mon, const QDict *qdict, QObject **ret_data);
 
 void do_migrate_set_speed(Monitor *mon, const QDict *qdict, QObject **ret_data);
 

qemu-monitor.hx

@@ -740,7 +740,8 @@ ETEXI
         .args_type  = "",
         .params     = "",
         .help       = "cancel the current VM migration",
-        .mhandler.cmd = do_migrate_cancel,
+        .user_print = monitor_user_noop,
+        .mhandler.cmd_new = do_migrate_cancel,
     },
 
 STEXI