fix some more fd leaks

qubes/vm/qubesvm.py

@@ -706,6 +706,12 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
             self.events_enabled = True
         self.fire_event('domain-init')
 
+    def close(self):
+        if self._qdb_connection is not None:
+            self._qdb_connection.close()
+            self._qdb_connection = None
+        super().close()
+
     def __hash__(self):
         return self.qid
 

qubespolicy/cli.py

@@ -69,8 +69,9 @@ def main(args=None):
     caller_ident = args.process_ident + "," + args.domain + "," + args.domain_id
     log = logging.getLogger('qubespolicy')
     log.setLevel(logging.INFO)
-    handler = logging.handlers.SysLogHandler(address='/dev/log')
-    log.addHandler(handler)
+    if not log.handlers:
+        handler = logging.handlers.SysLogHandler(address='/dev/log')
+        log.addHandler(handler)
     log_prefix = 'qrexec: {}: {} -> {}: '.format(
         args.service_name, args.domain, args.target)
     try: