Optimize routine GetSubnodeByName
Optimize routine GetSubnodeByName

Change parameter from passing by  value to by reference

xiaoxq/apollo,ApolloAuto/apollo,xiaoxq/apollo,jinghaomiao/apollo,wanglei828/apollo,ApolloAuto/apollo,xiaoxq/apollo,ycool/apollo,ycool/apollo,wanglei828/apollo,jinghaomiao/apollo,jinghaomiao/apollo,wanglei828/apollo,ApolloAuto/apollo,wanglei828/apollo,ycool/apollo,jinghaomiao/apollo,ycool/apollo,jinghaomiao/apollo,ApolloAuto/apollo,ycool/apollo,jinghaomiao/apollo,wanglei828/apollo,ApolloAuto/apollo,ApolloAuto/apollo,xiaoxq/apollo,xiaoxq/apollo,wanglei828/apollo,xiaoxq/apollo,ycool/apollo