This patch is specific to mysql-5.7

ISSUE: FOUND_ROWS() returned 1 even though the previous
       select did not return any rows. This was happening
       because the statistics returned by InnoDB returned
       1 for the select even though there are no rows.
       The same count was further returned by FOUND_ROWS().

FIX: In InnoDB, while determining statistics, check whether
     its for temporary table. If its temporary table,
     do not increment the row count.