Fix crash in HANDLER PREV or NEXT if the cursor was positioned using a unique search condition on the primary key: in that case InnoDB does NOT store the cursor position for later fetch prev or next


innobase/row/row0sel.c:
  Fix crash in HANDLER PREV or NEXT if the cursor was positioned using a unique search condition on the primary key: in that case InnoDB does NOT store the cursor position for later fetch prev or next