$OpenBSD: patch-src_net_client_c,v 1.1 2015/02/24 23:40:02 bentley Exp $
--- src/net_client.c.orig	Tue Feb 24 00:09:49 2015
+++ src/net_client.c	Tue Feb 24 00:09:50 2015
@@ -279,7 +279,7 @@ static void NET_CL_AdvanceWindow(void)
 
         // Advance the window
 
-        memcpy(recvwindow, recvwindow + 1, 
+        memmove(recvwindow, recvwindow + 1, 
                sizeof(net_server_recv_t) * (BACKUPTICS - 1));
         memset(&recvwindow[BACKUPTICS-1], 0, sizeof(net_server_recv_t));
 
