planning: fixed an issue when evaluate obstacle history trajectory with only single point in history
planning: fixed an issue when evaluate obstacle history trajectory with only single point in history

xiaoxq/apollo,ApolloAuto/apollo,xiaoxq/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ycool/apollo,ycool/apollo,jinghaomiao/apollo,ApolloAuto/apollo,jinghaomiao/apollo,xiaoxq/apollo,jinghaomiao/apollo,xiaoxq/apollo,ycool/apollo,xiaoxq/apollo,jinghaomiao/apollo,ycool/apollo,ycool/apollo,jinghaomiao/apollo,jinghaomiao/apollo,xiaoxq/apollo,ycool/apollo,ApolloAuto/apollo