fix #343 - close fds of mkstemp for messages

Signed-off-by: Nico Schottelius <nico@freiheit.schottelius.org>

cdist/message.py

@@ -37,11 +37,13 @@ class Message(object):
         self.prefix = prefix
         self.global_messages = messages
 
-        self.messages_in  = tempfile.mkstemp(suffix='.cdist_message_in')[1]
-        self.messages_out = tempfile.mkstemp(suffix='.cdist_message_out')[1]
+        in_fd, self.messages_in  = tempfile.mkstemp(suffix='.cdist_message_in')
+        out_fd, self.messages_out = tempfile.mkstemp(suffix='.cdist_message_out')
 
-        self._copy_messages()
+        os.close(in_fd)
+        os.close(out_fd)
 
+        self._copy_messages()
 
     @property
     def env(self):