fix<process_email>: free the log file handler after it's not used anymore

helpdesk/email.py

@@ -74,6 +74,8 @@ def process_email(quiet=False):
         if quiet:
             logger.propagate = False  # do not propagate to root logger that would log to console
         logdir = q.logging_dir or '/var/log/helpdesk/'
+
+        try:
             handler = logging.FileHandler(join(logdir, q.slug + '_get_email.log'))
             logger.addHandler(handler)
 
@@ -86,6 +88,15 @@ def process_email(quiet=False):
                 process_queue(q, logger=logger)
                 q.email_box_last_check = timezone.now()
                 q.save()
+        finally:
+            try:
+                handler.close()
+            except Exception as e:
+                logging.exception(e)
+            try:
+                logger.removeHandler(handler)
+            except Exception as e:
+                logging.exception(e)
 
 
 def pop3_sync(q, logger, server):