Use ulonglong to store row count in libmysld Protocol_text::remove_last_row()

{

  MYSQL_DATA *data= thd->cur_data;

  MYSQL_ROWS **last_row_hook= &data->data;

  uint count= data->rows;

  my_ulonglong count= data->rows;

  DBUG_ENTER("Protocol_text::remove_last_row");

  while (--count)

    last_row_hook= &(*last_row_hook)->next;