Recently a friend of mine asked me the following question. He pledged $500- to a Yeshiva, yet before he paid the pledge the Yeshiva closed. Does he still have to pay his pledge to another Tzedaka or is he absolved? (As always CYLOR)

Recently a friend of mine asked me the following question. He pledged $500- to a Yeshiva, yet before he paid the pledge the Yeshiva closed. Does he still have to pay his pledge to another Tzedaka or is he absolved? Is there a difference if the Tzedaka closed and remained in debt or if it closed and satisfied all outstanding debts? Is there a difference if the organization had bylaws specifying what happens to their assets on dissolution? (As always CYLOR)