From a27ce74e10189a801cd11da535324f1dccf14484 Mon Sep 17 00:00:00 2001
From: OrangePee1 <56338098+OrangePee1@users.noreply.github.com>
Date: Mon, 17 May 2021 03:55:22 +0800
Subject: [PATCH] fix crash in UTIL_AreHostagesImprov (#626)

add check g_engfuncs.pfnEngCheckParm is nullptr or not.
---
 regamedll/dlls/util.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/regamedll/dlls/util.cpp b/regamedll/dlls/util.cpp
index 4a602590..8385be35 100644
--- a/regamedll/dlls/util.cpp
+++ b/regamedll/dlls/util.cpp
@@ -1725,6 +1725,9 @@ bool UTIL_AreHostagesImprov()
 	}
 
 #ifdef REGAMEDLL_ADD
+	if (g_engfuncs.pfnEngCheckParm == nullptr)
+		return false;
+	
 	// someday in CS 1.6
 	int improv = ENG_CHECK_PARM("-host-improv", nullptr);
 	if (improv)