From 4c3c1deeda7aa87e4a53ee57bfda10549e9e715f Mon Sep 17 00:00:00 2001
From: Christoph von Wittich <christoph_vw@reactos.org>
Date: Wed, 15 Apr 2009 21:19:48 +0000
Subject: [PATCH] fix some setupapi winetests

svn path=/trunk/; revision=40535
---
 reactos/dll/win32/setupapi/devinst.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/reactos/dll/win32/setupapi/devinst.c b/reactos/dll/win32/setupapi/devinst.c
index d3637f01e72..b9c8cdd2194 100644
--- a/reactos/dll/win32/setupapi/devinst.c
+++ b/reactos/dll/win32/setupapi/devinst.c
@@ -3373,7 +3373,12 @@ SetupDiInstallClassExA(
     PWSTR InfFileNameW = NULL;
     BOOL Result;
 
-    if (InfFileName)
+    if (!InfFileName)
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }
+    else
     {
         InfFileNameW = MultiByteToUnicode(InfFileName, CP_ACP);
         if (InfFileNameW == NULL)