Don't store blocked messages in offline queue (thanks to Brian Acton)(EJAB-1224)

src/ejabberd_sm.erl

@@ -573,6 +573,7 @@ route_message(From, To, Packet) ->
 		_ ->
 		    case ejabberd_auth:is_user_exists(LUser, LServer) of
 			true ->
+			    is_privacy_allow(From, To, Packet) andalso
 				ejabberd_hooks:run(offline_message_hook,
 						   LServer,
 						   [From, To, Packet]);