The return value of functions managing the cursor in the keytab
were not checked or reported in a consistent way. This should
assure a reasonable error message in case something goes wrong.
https://pagure.io/freeipa/issue/8658
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>