From cd347a316d7b98128f1c644e21d2ab9d34c8af03 Mon Sep 17 00:00:00 2001
From: Petr Baudis <pasky@ucw.cz>
Date: Sat, 26 Nov 2011 23:53:50 +0100
Subject: [PATCH] agent::conn: Do not assume being non-NULL

Disconnected agents will remain in the world in the future.
---
 agent.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/agent.cc b/agent.cc
index ea984fc..438c234 100644
--- a/agent.cc
+++ b/agent.cc
@@ -31,6 +31,9 @@ agent::move_dir(int dir_x, int dir_y)
 void
 agent::on_tick(void)
 {
+	if (!conn)
+		return;
+
 	char around[4] = {
 		tile->tile_in_dir(0, -1).symbol(),
 		tile->tile_in_dir(1, 0).symbol(),
@@ -43,5 +46,6 @@ agent::on_tick(void)
 agent::~agent()
 {
 	tile->on_agent_leave(*this);
-	delete conn;
+	if (conn)
+		delete conn;
 };