BF: Add handling of exception in pyinotify callback

If error isn't handled, no error messages are printed and the jail
ceases to function.

server/filterpyinotify.py

@@ -209,4 +209,7 @@ class ProcessPyinotify(pyinotify.ProcessEvent):
 
 	# just need default, since using mask on watch to limit events
 	def process_default(self, event):
-		self.__FileFilter.callback(event, origin='Default ')
+		try:
+			self.__FileFilter.callback(event, origin='Default ')
+		except Exception as e:
+			logSys.error("Error in FilterPyinotify callback: %s", e)