[libvirt] [PATCH] usbGetDevice: don't leak a "usbDevice" buffer on failure path

[Daniel P. Berrange]

On Mon, Jan 25, 2010 at 04:46:02PM +0100, Jim Meyering wrote:
> Here's another leak fix, although this one is only on a failure path:
> 
> >From a89551ecfcebfc3d45eff38923824a9590fe9f76 Mon Sep 17 00:00:00 2001
> From: Jim Meyering <meyering at redhat.com>
> Date: Mon, 25 Jan 2010 16:44:13 +0100
> Subject: [PATCH] usbGetDevice: don't leak a "usbDevice" buffer on failure path
> 
> * src/util/hostusb.c (usbGetDevice): Free "dev" when returning NULL.
> ---
>  src/util/hostusb.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
> 
> diff --git a/src/util/hostusb.c b/src/util/hostusb.c
> index 9a37103..f635ce5 100644
> --- a/src/util/hostusb.c
> +++ b/src/util/hostusb.c
> @@ -171,8 +171,10 @@ usbGetDevice(virConnectPtr conn,
> 
>      if (vendor) {
>          /* Look up bus.dev by vendor:product */
> -        if (usbFindBusByVendor(conn, vendor, product, &bus, &devno) < 0)
> +        if (usbFindBusByVendor(conn, vendor, product, &bus, &devno) < 0) {
> +            VIR_FREE(dev);
>              return NULL;
> +        }
>      }
> 
>      dev->bus     = bus;
> --

ACK

Daniel
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