view manipulations
      
The bespoke flag was not properly reset after last call to 
fill_record. Fixed by resetting in caller mysql_update.

mysql-test/r/auto_increment.result:
  Bug#46616: Test result.
mysql-test/t/auto_increment.test:
  Bug#46616: Test case.
sql/sql_update.cc:
  Bug#46616: Fix.