Input: keyboard - fix theoretical race on vt switch
Input: keyboard - fix theoretical race on vt switch

A VT switch can theoretically change fg_console between

        vc = vc_cons[fg_console].d
and
        kbd = kbd_table + fg_console

Fix it by replacing the second fg_console with vc->vc_num.

Signed-off-by: Alan Jenkins <162afe620bd365a9fa23fc00a34825fb9030a484@tuffmail.co.uk>
Signed-off-by: Dmitry Torokhov <10a8c465cefc9bdd6c925e26964d23c90f1141cc@mail.ru>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs