test_lnpeer: reset electrum.trampoline._TRAMPOLINE_NODES_UNITTESTS in tearDown

electrum/tests/test_lnpeer.py

@@ -408,7 +408,7 @@ class TestPeer(TestCaseForTestnet):
                 shutil.rmtree(lnworker._user_dir)
             self._lnworkers_created.clear()
         run(cleanup_lnworkers())
-
+        electrum.trampoline._TRAMPOLINE_NODES_UNITTESTS = {}
         super().tearDown()
 
     def prepare_peers(
@@ -1194,7 +1194,6 @@ class TestPeer(TestCaseForTestnet):
             graph.workers['bob'].name: LNPeerAddr(host="127.0.0.1", port=9735, pubkey=graph.workers['bob'].node_keypair.pubkey),
             graph.workers['carol'].name: LNPeerAddr(host="127.0.0.1", port=9735, pubkey=graph.workers['carol'].node_keypair.pubkey),
         }
-        try:
         # end-to-end trampoline: we attempt
         # * a payment with one trial: fails, because
         #   we need at least one trial because the initial fees are too low
@@ -1203,8 +1202,6 @@ class TestPeer(TestCaseForTestnet):
             graph,
             fail_kwargs={'alice_uses_trampoline': True, 'attempts': 1},
             success_kwargs={'alice_uses_trampoline': True, 'attempts': 30})
-        finally:
-            electrum.trampoline._TRAMPOLINE_NODES_UNITTESTS = {}
 
     @needs_test_with_all_chacha20_implementations
     def test_payment_multipart_trampoline_legacy(self):
@@ -1213,14 +1210,11 @@ class TestPeer(TestCaseForTestnet):
             graph.workers['bob'].name: LNPeerAddr(host="127.0.0.1", port=9735, pubkey=graph.workers['bob'].node_keypair.pubkey),
             graph.workers['carol'].name: LNPeerAddr(host="127.0.0.1", port=9735, pubkey=graph.workers['carol'].node_keypair.pubkey),
         }
-        try:
         # trampoline-to-legacy: this is restricted, as there are no forwarders capable of doing this
         self._run_mpp(
             graph,
             fail_kwargs={'alice_uses_trampoline': True, 'attempts': 30, 'disable_trampoline_receiving': True},
             success_kwargs={})
-        finally:
-            electrum.trampoline._TRAMPOLINE_NODES_UNITTESTS = {}
 
     @needs_test_with_all_chacha20_implementations
     def test_fail_pending_htlcs_on_shutdown(self):