quic: shift argc/argv if a subcommand is present
quic: shift argc/argv if a subcommand is present

h2o/h2o,h2o/h2o,devnexen/h2o,h2o/h2o,cwyang/h2o,cwyang/h2o,h2o/h2o,devnexen/h2o,cwyang/h2o,yannick/h2o,h2o/h2o,yannick/h2o,yannick/h2o,devnexen/h2o,h2o/h2o,yannick/h2o,devnexen/h2o,devnexen/h2o,h2o/h2o,devnexen/h2o,devnexen/h2o,devnexen/h2o,yannick/h2o,devnexen/h2o,yannick/h2o,cwyang/h2o,yannick/h2o,h2o/h2o,yannick/h2o,cwyang/h2o,cwyang/h2o,cwyang/h2o,cwyang/h2o,h2o/h2o,yannick/h2o