#1065 Use getattr when retrieving event socket

If ogClient does not run on windows or linux mode, it does not create a
datagram event socket.

If ogClient runs in virtual or live mode this will cause an error when
calling get_event_socket because the class instance has no member
"event_sock".

Use getattr when retrieving the event socket from ogClient class, if
there is no event socket, then return None.

Fixes 2465ef25b7 (Add event datagram socket)

src/ogClient.py

@@ -48,7 +48,7 @@ class ogClient:
 		return self.sock
 
 	def get_event_socket(self):
-		return self.event_sock
+		return getattr(self, 'event_sock', None)
 
 	def get_state(self):
 		return self.state