staging/vt6656: Fix screwed up indentation in swGetOFDMControlRate

The indentation in the swGetOFDMControlRate function is screwed up.
At first it appears that there are missing braces on a multi-line if, but
looking at history, commit dd0a774f
("staging: vt6656: card/main_usb/device use new structure names")
incorrectly indented the two lines below.

Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>