fix(monitor): fix using variable 'now' before assignment

iotconnect/monitor.py

@@ -25,8 +25,8 @@ def monitor(self):
 
     def run(self):
         while self._running:
+            now = time.time()
             try:
-                now = time.time()
                 monitor_result = self.monitor()
                 for publisher in self._publishers:
                     if not publisher.is_initialized():