From 70268440ee8c824cf01527307fca326328f5b47e Mon Sep 17 00:00:00 2001
From: Marco Hladik <marco@icculus.org>
Date: Sun, 24 Jan 2021 01:54:14 +0100
Subject: [PATCH] games_updatesavailable: check for -1 to avoid bad pointer
 errors

---
 src/menu-fn/m_customgame.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/menu-fn/m_customgame.cpp b/src/menu-fn/m_customgame.cpp
index 66ae231c..8fd7c41c 100644
--- a/src/menu-fn/m_customgame.cpp
+++ b/src/menu-fn/m_customgame.cpp
@@ -59,7 +59,10 @@ game_updatesavailable(void)
 	for (int i = 0i; i < pkgcount; i++) {
 		int id = game_getpackageid(argv(i));
 		string status = getpackagemanagerinfo(id, GPMI_INSTALLED);
-		
+
+		if (id == -1)
+			continue;
+
 		switch (status) {
 		case "":
 			if (updates[id].installed == "") {