unreal: don't set TS to 0 when it's sent in MODE (samode overrides the timestamp as this to ensure it always works)

protocols/unreal.py

@@ -521,6 +521,7 @@ class UnrealProtocol(TS6BaseProtocol):
             if numeric in self.irc.servers and args[-1].isdigit():
                 # Sender is a server AND last arg is number. Perform TS updates.
                 their_ts = int(args[-1])
+                if their_ts > 0:
                     self.updateTS(channel, their_ts)
             return {'target': channel, 'modes': parsedmodes, 'oldchan': oldobj}
         else: