01/02: [DSOUND] Check arguments in IDirectSoundFullDuplex::Initialize. This prevents a crash in winetest_dsound:duplex

[Mark Jansen]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=775e2aea3cc85508f8965…

commit 775e2aea3cc85508f8965660ab8486b1ec3869b6
Author:     Mark Jansen <mark.jansen(a)reactos.org>
AuthorDate: Sun Mar 18 15:56:59 2018 +0100
Commit:     Mark Jansen <mark.jansen(a)reactos.org>
CommitDate: Sun Mar 18 15:58:04 2018 +0100

    [DSOUND] Check arguments in IDirectSoundFullDuplex::Initialize.
    This prevents a crash in winetest_dsound:duplex
---
 dll/directx/wine/dsound/duplex.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dll/directx/wine/dsound/duplex.c b/dll/directx/wine/dsound/duplex.c
index dbee1b16ba..5ab498ba19 100644
--- a/dll/directx/wine/dsound/duplex.c
+++ b/dll/directx/wine/dsound/duplex.c
@@ -535,6 +535,9 @@ IDirectSoundFullDuplexImpl_Initialize(
         lpDscBufferDesc, lpDsBufferDesc, hWnd, dwLevel,
         lplpDirectSoundCaptureBuffer8, lplpDirectSoundBuffer8);
 
+    if (!lplpDirectSoundCaptureBuffer8 || !lplpDirectSoundBuffer8)
+        return E_INVALIDARG;
+
     if (This->renderer_device != NULL || This->capture_device != NULL) {
         WARN("already initialized\n");
         *lplpDirectSoundCaptureBuffer8 = NULL;