fix wallet server shutdown for tests

torba/orchstr8/node.py

@@ -175,7 +175,7 @@ class SPVNode:
 
     async def stop(self, cleanup=True):
         try:
-            await self.controller.shutdown()
+            self.server.db.shutdown()
         finally:
             cleanup and self.cleanup()
 

torba/server/db.py

@@ -133,6 +133,10 @@ class DB(object):
         # Read TX counts (requires meta directory)
         await self._read_tx_counts()
 
+    def shutdown(self):
+        self.utxo_db.close()
+        self.history.close_db()
+
     async def open_for_compacting(self):
         await self._open_dbs(True, True)