In ex17.c do Extra Credit. In die() add parameter conn and make die() close and clean up.

In terminal, manually tested by running commands that will call die()
$ ./ex17 db.dat
ERROR: USAGE: ex17 <dbfile> <action> [action params]
$ ./ex17 db.dat s
ERROR: Need id, name, email to get
$ ./ex17 db.dat s 1000 blah doo
ERROR: There's not that many records.