read_statistic -> read_statistics
(statistic is adjective)


include/mysql.h:
  read_statistic -> read_statistics
libmysql/client_settings.h:
  read_statistic -> read_statistics
libmysql/libmysql.c:
  read_statistic -> read_statistics
libmysqld/lib_sql.cc:
  read_statistic -> read_statistics
sql-common/client.c:
  read_statistic -> read_statistics