V4L/DVB (8887): gspca: fix memory leak

Free allocated memory

Cc: Jean-Francois Moine <moinejf@free.fr>
Cc: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/gspca/gspca.c

@@ -459,6 +459,8 @@ static int create_urbs(struct gspca_dev *gspca_dev,
 		urb = usb_alloc_urb(npkt, GFP_KERNEL);
 		if (!urb) {
 			err("usb_alloc_urb failed");
+			for (i = 0; i < n; i++)
+				usb_free_urb(gspca_dev->urb[i]);
 			return -ENOMEM;
 		}
 		urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev,