[PATCH 1/2] winecoreaudio: Set the buffer to NULL after freeing.

[Andrew Eikum]

Signed-off-by: Andrew Eikum <aeikum at codeweavers.com>

On Tue, Dec 21, 2021 at 03:45:12PM +0000, Huw Davies wrote:
> This ensures the subsequent allocation is free to pick a new location.
> 
> Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52202
> Signed-off-by: Huw Davies <huw at codeweavers.com>
> ---
>  dlls/winecoreaudio.drv/coreaudio.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/dlls/winecoreaudio.drv/coreaudio.c b/dlls/winecoreaudio.drv/coreaudio.c
> index 00bd79927ca..4bb83a37621 100644
> --- a/dlls/winecoreaudio.drv/coreaudio.c
> +++ b/dlls/winecoreaudio.drv/coreaudio.c
> @@ -1352,8 +1352,11 @@ static NTSTATUS get_render_buffer(void *args)
>  
>      if(stream->wri_offs_frames + params->frames > stream->bufsize_frames){
>          if(stream->tmp_buffer_frames < params->frames){
> -            NtFreeVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer,
> -                                &stream->tmp_buffer_size, MEM_RELEASE);
> +            if(stream->tmp_buffer){
> +                NtFreeVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer,
> +                                    &stream->tmp_buffer_size, MEM_RELEASE);
> +                stream->tmp_buffer = NULL;
> +            }
>              stream->tmp_buffer_size = params->frames * stream->fmt->nBlockAlign;
>              if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, 0,
>                                         &stream->tmp_buffer_size, MEM_COMMIT, PAGE_READWRITE)){
> -- 
> 2.23.0
> 
>