Don't put nullptr into the vector..
Don't put nullptr into the vector..

eric-haibin-lin/peloton,eric-haibin-lin/peloton,eric-haibin-lin/peloton,eric-haibin-lin/peloton,eric-haibin-lin/peloton,eric-haibin-lin/peloton,eric-haibin-lin/peloton