[2/3] hidclass.sys: Fix memory leak in call_minidriver.

[Aric Stewart]

Signed-off-by: Aric Stewart <aric at codeweavers.com>

On 10/26/16 2:53 PM, Sebastian Lackner wrote:
> Before 54002103763188b5c5b1fd1210ad4cf09ef80bf9, the output buffer
> was released because UserIosb != NULL.
> 
> Signed-off-by: Sebastian Lackner <sebastian at fds-team.de>
> ---
>  dlls/hidclass.sys/main.c |   11 +----------
>  1 file changed, 1 insertion(+), 10 deletions(-)
> 
> diff --git a/dlls/hidclass.sys/main.c b/dlls/hidclass.sys/main.c
> index f5a60e9..1742cfe 100644
> --- a/dlls/hidclass.sys/main.c
> +++ b/dlls/hidclass.sys/main.c
> @@ -98,18 +98,10 @@ NTSTATUS call_minidriver(ULONG code, DEVICE_OBJECT *device, void *in_buff, ULONG
>      IRP *irp;
>      IO_STATUS_BLOCK irp_status;
>      NTSTATUS status;
> -    void *buffer = NULL;
> -
>      HANDLE event = CreateEventA(NULL, FALSE, FALSE, NULL);
>  
> -    if (out_size)
> -    {
> -        buffer = HeapAlloc(GetProcessHeap(), 0, out_size);
> -        memcpy(buffer, out_buff, out_size);
> -    }
> -
>      irp = IoBuildDeviceIoControlRequest(code, device, in_buff, in_size,
> -        buffer, out_size, TRUE, NULL, &irp_status);
> +        out_buff, out_size, TRUE, NULL, &irp_status);
>  
>      IoSetCompletionRoutine(irp, internalComplete, event, TRUE, TRUE, TRUE);
>      status = IoCallDriver(device, irp);
> @@ -117,7 +109,6 @@ NTSTATUS call_minidriver(ULONG code, DEVICE_OBJECT *device, void *in_buff, ULONG
>      if (status == STATUS_PENDING)
>          WaitForSingleObject(event, INFINITE);
>  
> -    memcpy(out_buff, buffer, out_size);
>      status = irp->IoStatus.u.Status;
>  
>      IoCompleteRequest(irp, IO_NO_INCREMENT );
>