From 30b315514641247a07e24ad7fc33fd6804fe55b8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@dev-extend.eu>
Date: Sun, 22 Aug 2010 23:03:19 +0200
Subject: [PATCH] psu_game: Don't stop the instance if it doesn't exist.

---
 src/psu/psu_game.erl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/psu/psu_game.erl b/src/psu/psu_game.erl
index df6e117..579a074 100644
--- a/src/psu/psu_game.erl
+++ b/src/psu/psu_game.erl
@@ -660,7 +660,9 @@ event(mission_abort) ->
 	send_1006(11),
 	{ok, User} = egs_user_model:read(get(gid)),
 	%% delete the mission
-	psu_instance:stop(User#egs_user_model.instancepid),
+	if	User#egs_user_model.instancepid =:= undefined -> ignore;
+		true -> psu_instance:stop(User#egs_user_model.instancepid)
+	end,
 	%% full hp
 	Character = User#egs_user_model.character,
 	MaxHP = Character#characters.maxhp,