fixbug when virtual and had msg type field of zproto_codec_java.gsl
fixbug when virtual and had msg type field of zproto_codec_java.gsl

bkmit/zproto,zeromq/zproto,bkmit/zproto,zeromq/zproto,zeromq/zproto,bkmit/zproto,zeromq/zproto,bkmit/zproto,bkmit/zproto,bkmit/zproto,bkmit/zproto,zeromq/zproto,zeromq/zproto,zeromq/zproto