make c612ddee compile with old libevents

diff --git a/src/common/compat_libevent.c b/src/common/compat_libevent.c
index 6afd3c1d29384c2666e435f6bd7496958af3edca..d94f615f74c7c92d3a411ac4bc5441541d6fe9fa 100644 (file)
--- a/src/common/compat_libevent.c
+++ b/src/common/compat_libevent.c
@@ -162,6 +162,8 @@ void
 tor_libevent_initialize(tor_libevent_cfg *torcfg)
 {
   tor_assert(the_event_base == NULL);
+  /* some paths below don't use torcfg, so avoid unused variable warnings */
+  (void)torcfg;
 
 #ifdef __APPLE__
   if (MACOSX_KQUEUE_IS_BROKEN ||