server: Provide empty initialiser for struct option array

We see the following warning with certain compilers:

 console-server.c:460:2: error: missing initializer for field 'name' of 'const struct option' [-Werror=missing-field-initializers]
    { },

So use a proper empty initialiser here.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
1 file changed