empty recordset where some records should be found)


sql/ha_myisam.cc:
  Code simplified with vio_ok()
sql/mysqld.cc:
  vio_ok used
sql/slave.cc:
  vio_ok used
sql/sql_class.cc:
  Here is the place of the error - we should not examine net.vio in
  embedded library
sql/sql_class.h:
  method added to always return TRUE in embedded library, and to
  sheck thd.net.vio otherwise
sql/sql_show.cc:
  code simplified with vio_ok()