Ensure pay_later variables assigned to template

[eileenmcnaughton]

Overview

Ensure pay_later variables assigned to template

Before

variables only assigned to template when not NULL

After

variables reliably assigned

Technical Details

I removed a CRM_Utils_Value::array too - we can see from the lines around it that it will not e-notice

Comments

[civibot]

(Standard links)

• If this is your first pull-request for CiviCRM, please browse CONTRIBUTING.md for information about the development and testing processes.
• If you are reviewing this pull-request, you may wish to consult the test sites and the Review Standards (long template, short template).

[colemanw]

Merging as this is a safe change that fits with other refactoring.