check error code of `decode_ssl_input()`
check error code of `decode_ssl_input()`

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