Merge pull request #4226 from breez/fix-chainrpc-crash

Fix crash when ChainNotifier is being accessed too early.

htlcswitch/mock.go

@@ -931,6 +931,10 @@ func (m *mockNotifier) Start() error {
 	return nil
 }
 
+func (m *mockNotifier) Started() bool {
+	return true
+}
+
 func (m *mockNotifier) Stop() error {
 	return nil
 }