Potential list overrun during XA recovery

#define MAX_XID_LIST_SIZE  (1024*128)

#define MIN_XID_LIST_SIZE  128

  for (info.len= MAX_XID_LIST_SIZE ;

       info.list==0 && info.len > MIN_XID_LIST_SIZE; info.len/=2)

  {

    info.list=(XID *)my_malloc(info.len*sizeof(XID), MYF(0));

  }

  if (!info.list)

  {

    sql_print_error(ER(ER_OUTOFMEMORY),

                    static_cast<int>(info.len*sizeof(XID)));

    DBUG_RETURN(1);

  }