coding style fix for prediction/.../obstacle.cc
coding style fix for prediction/.../obstacle.cc

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