From df76f819562788dd83e94c88a83461b042c90cf3 Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Fri, 7 Oct 2022 01:50:04 +0200
Subject: [PATCH] add NULL check

---
 src/winapi_hooks.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/winapi_hooks.c b/src/winapi_hooks.c
index f90841d..b1f577c 100644
--- a/src/winapi_hooks.c
+++ b/src/winapi_hooks.c
@@ -563,7 +563,7 @@ BOOL WINAPI fake_StretchBlt(
 
     char class_name[MAX_PATH] = { 0 };
 
-    if (g_ddraw && g_ddraw->hwnd && hwnd != g_ddraw->hwnd)
+    if (g_ddraw && g_ddraw->hwnd && hwnd && hwnd != g_ddraw->hwnd)
     {
         GetClassNameA(hwnd, class_name, sizeof(class_name) - 1);
     }