staging: vt6656: iwctl: remove unneeded scope block in iwctl_siwessid()

Reduce indentation by removing completely redundant scope block in the
iwctl_siwessid() function.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>