Fix bug: an index cursor can theoretically be restored in a wrong place
log0log.c:
  Fix bug: if combined log file size is >= 2 GB in a 32-bit computer InnoDB can write log to a wrong position


innobase/log/log0log.c:
  Fix bug: if combined log file size is >= 2 GB in a 32-bit computer InnoDB can write log to a wrong position
innobase/btr/btr0pcur.c:
  Fix bug: an index cursor can theoretically be restored in a wrong place