dib0700: fix nec repeat handling

BugLink: http://bugs.launchpad.net/bugs/1642968

commit ba13e98f upstream.

When receiving a nec repeat, ensure the correct scancode is repeated
rather than a random value from the stack.  This removes the need for
the bogus uninitialized_var() and also fixes the warnings:

    drivers/media/usb/dvb-usb/dib0700_core.c: In function ‘dib0700_rc_urb_completion’:
    drivers/media/usb/dvb-usb/dib0700_core.c:679: warning: ‘protocol’ may be used uninitialized in this function

[sean addon: So after writing the patch and submitting it, I've bought the
             hardware on ebay. Without this patch you get random scancodes
             on nec repeats, which the patch indeed fixes.]
Signed-off-by: Sean Young <sean@mess.org>
Tested-by: Sean Young <sean@mess.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

drivers/media/usb/dvb-usb/dib0700_core.c

@@ -677,7 +677,7 @@ static void dib0700_rc_urb_completion(struct urb *purb)
 	struct dvb_usb_device *d = purb->context;
 	struct dib0700_rc_response *poll_reply;
 	enum rc_type protocol;
-	u32 uninitialized_var(keycode);
+	u32 keycode;
 	u8 toggle;
 
 	deb_info("%s()\n", __func__);
@@ -719,7 +719,8 @@ static void dib0700_rc_urb_completion(struct urb *purb)
 		    poll_reply->nec.data       == 0x00 &&
 		    poll_reply->nec.not_data   == 0xff) {
 			poll_reply->data_state = 2;
-			break;
+			rc_repeat(d->rc_dev);
+			goto resubmit;
 		}
 
 		if ((poll_reply->nec.data ^ poll_reply->nec.not_data) != 0xff) {