migration: Open brace '{' following struct go on the same line

Signed-off-by: Bihong Yu <yubihong@huawei.com>
Reviewed-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1603163448-27122-5-git-send-email-yubihong@huawei.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/migration.h

@@ -124,8 +124,7 @@ struct MigrationClass {
     DeviceClass parent_class;
 };
 
-struct MigrationState
-{
+struct MigrationState {
     /*< private >*/
     DeviceState parent_obj;