From 4218511ecd8a1facbd38d744b1bd518c05517988 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Wed, 9 May 2018 12:38:50 -0400
Subject: [PATCH] Remove a workaround for ancient libevent versions.

Libevent has accepted a const timeval argument to event_add() for a
very long time now.
---
 src/common/compat_libevent.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common/compat_libevent.c b/src/common/compat_libevent.c
index cf3b7298c2..56ee682fde 100644
--- a/src/common/compat_libevent.c
+++ b/src/common/compat_libevent.c
@@ -269,7 +269,7 @@ periodic_timer_launch(periodic_timer_t *timer, const struct timeval *tv)
   tor_assert(timer);
   if (event_pending(timer->ev, EV_TIMEOUT, NULL))
     return;
-  event_add(timer->ev, (struct timeval *)tv); /*drop const for old libevent*/
+  event_add(timer->ev, tv);
 }
 
 /**