V4L/DVB (9604): ttusb_dec: fix memory leak

Free allocated memory

Signed-off-by: Douglas Schilling Landgraf <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/dvb/ttusb-dec/ttusb_dec.c

···
 		dec->irq_buffer = usb_buffer_alloc(dec->udev,IRQ_PACKET_SIZE,
 					GFP_ATOMIC, &dec->irq_dma_handle);
 		if(!dec->irq_buffer) {
+			usb_free_urb(dec->irq_urb);
 			return -ENOMEM;
 		}
 		usb_fill_int_urb(dec->irq_urb, dec->udev,dec->irq_pipe,