Fix EnforcingChannelKeys panic when our counterparty burns their $.#445

Merged

TheBlueMatt merged 2 commits intolightningdevkit:masterfrom

TheBlueMatt:2020-01-fuzz-enforcer-fix

Feb 10, 2020

Commits on Feb 8, 2020

Fix EnforcingChannelKeys panic when our counterparty burns their $.
TheBlueMatt
committed
Test that EnforcingChannelKeys doesn't panic on duplicate RAAs
TheBlueMatt
committed