staging: wilc1000: No space is necessary after a cast

A space after type casting is not needed. All the other typecasts
in this file don't put space after typecast. so remove space
after typecast at this line.

checked with checkpatch.pl script

Signed-off-by: Keerthi Reddy <keerthigd4990@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>