reset chatstate of a contact that signed out

src/gajim.py

@@ -363,6 +363,10 @@ class Interface:
 					self.remote.raise_signal('ContactPresence',
 						(account, array))
 				
+				# when contact signs out we reset his chatstate
+				contact = gaim.get_first_contact_instance_from_jid(acccount, jid)
+				contact.chatstate = None
+						
 			elif old_show > 1 and new_show < 2:
 				if gajim.config.get_per('soundevents', 'contact_disconnected',
 												'enabled'):