From d31ffbade55774d08b959d39f8f03100fc02257f Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Mon, 2 Aug 2021 17:13:31 +0200
Subject: [PATCH] add NULL check

---
 src/dd.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/dd.c b/src/dd.c
index 56413c8..03ae5e0 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -1004,8 +1004,12 @@ ULONG dd_Release()
 
 HRESULT dd_GetAvailableVidMem(LPDDSCAPS lpDDCaps, LPDWORD lpdwTotal, LPDWORD lpdwFree)
 {
-    *lpdwTotal = 16777216;
-    *lpdwFree = 16777216;
+    if (lpdwTotal)
+        *lpdwTotal = 16777216;
+
+    if (lpdwFree)
+        *lpdwFree = 16777216;
+
     return DD_OK;
 }