Bug 11208: If no smsalertnumber is defined, the message is marked as failed

Bug 11208: If no smsalertnumber is defined, the message is marked as failed

For DUE message (and PREDUE, etc.) there are no check before sending the
message to the message_queue table.

This check avoids to try to send again and again the same message. Now
it is marked as "failed".

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Without the patch a sms notice will remain as 'pending' forever.
With the patch applied, the status is set to 'failed'.

Passes all tests and QA script.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>