tweak

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@549 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/openzap/mod_openzap/mod_openzap.c

@@ -163,7 +163,7 @@ static void stop_hold(switch_core_session_t *session_a, const char *uuid)
 			switch_channel_clear_flag(channel_a, CF_HOLD);
 		} else {
 			switch_channel_stop_broadcast(channel);
-			switch_channel_wait_for_flag(channel, CF_BROADCAST, SWITCH_FALSE, 2000);
+			switch_channel_wait_for_flag(channel, CF_BROADCAST, SWITCH_FALSE, 2000, NULL);
 		}
 
 		switch_core_session_rwunlock(session);