Minor bugfix to _fundraiser_sustainers_get_donation_sets_recurr_by_uid(), to report Active/Cancelled status correctly when the next charge's cancellation_reason value is set but empty.
Minor bugfix to _fundraiser_sustainers_get_donation_sets() to report active/cancelled status correctly.
Merge pull request #370 from JacksonRiver/7.x-4.x-recurring-master-donation-master-status

Report Active/Cancelled sustainer donation status correctly.