[SLOF] [PATCH slof 04/13] usb: Compile with -Wextra

[Thomas Huth]

On 27/01/2021 09.57, Alexey Kardashevskiy wrote:
> -Wextra enables a bunch of rather useful checks which this fixes.
> 
> Signed-off-by: Alexey Kardashevskiy <aik at ozlabs.ru>
> ---
>   lib/libusb/usb-core.c |  4 ++--
>   lib/libusb/usb-hid.c  |  2 +-
>   lib/libusb/usb-ohci.c | 12 +++++-------
>   lib/libusb/usb-xhci.c |  4 ++--
>   4 files changed, 10 insertions(+), 12 deletions(-)

Reviewed-by: Thomas Huth <thuth at redhat.com>