fix exception in handle_events

src/core.py

@@ -490,9 +490,11 @@ class Manager:
 		# Handle them for the backend's purposes, but still send them up in case the client
 		# wants to do something - show messages, for example
 		ret = []
-
+		try:
 			event = deluge_core.pop_event()
-
+		except:
+			pass
+		else:
 			while event is not None:
 	#			print "EVENT: ", event
 
@@ -529,6 +531,12 @@ class Manager:
 				        	                        "tracker_messages",
 				                	                new)
 
+
+				try:
+					event = deluge_core.pop_event()
+				except:
+					pass
+				else:
 					event = deluge_core.pop_event()
 
 		return ret