Re: [PATCH v3 0/6] MR7715: Implement dynamic formats in directdraw media stream.

[Anton Baskanov (＠baskanov)]

Anton Baskanov (@baskanov) commented about dlls/amstream/ddrawstream.c:
>                                                  DWORD flags)
>
> {
>      struct ddraw_stream *stream = impl_from_IMemAllocator(iface);
> - HRESULT hr;
> - return IMemAllocator_GetBuffer(stream->private_allocator, buf, start_time, end_time, flags);
> - EnterCriticalSection(&stream->cs);
> -
> - hr = IMemAllocator_GetBuffer(stream->private_allocator, buf, start_time, end_time, flags);
> - IMediaSample_SetMediaType(*buf, &stream->mt);

If `IMemAllocator_GetBuffer()` fails (e.g. when the allocator is decommitted) `*buf` will contain garbage. You should check `hr` before accessing it.